General Purpose USS & SAE Washers
Discover our range of Grade 5, Grade 8 and Nylon Flat Washers, designed to meet various assembly needs, offering durability, corrosion resistance and precision load distribution. These durable flat washers are ideal for secure fastening for industrial applications like construction, heavy machinery, mining and offshore drilling.
Grade 8 (USS) Flat Washers - Yellow Zinc Plated
Made for heavy loads, these yellow zinc‑plated Grade 8 (USS) washers offer enhanced thickness to resist dishing. Their close‑fitting ID boosts clamp capability, while the corrosion‑resistant finish extends service life. Pair with Grade 8 bolts for reliable performance in structural or industrial assemblies.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 1/4" | 9/32" | 3/4" | 5/64" | 100 |
373804
|
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Item Number: 373804
Package Weight: 0.9 lbs
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||||||
| 1/4" | 9/32" | 3/4" | 5/64" | 200 |
3738041
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Item Number: 3738041
Package Weight: 1.7 lbs
|
||||||
| 1/4" | 9/32" | 3/4" | 5/64" | 500 |
3738042
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Item Number: 3738042
Package Weight: 4 lbs
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||||||
| 5/16" | 11/32" | 7/8" | 3/32" | 100 |
373805
|
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Item Number: 373805
Package Weight: 1.3 lbs
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||||||
| 5/16" | 11/32" | 7/8" | 3/32" | 200 |
3738051
|
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Item Number: 3738051
Package Weight: 2.3 lbs
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||||||
| 5/16" | 11/32" | 7/8" | 3/32" | 500 |
3738052
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Item Number: 3738052
Package Weight: 6.1 lbs
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||||||
| 3/8" | 13/32" | 1" | 3/32" | 100 |
373806
|
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|
Item Number: 373806
Package Weight: 1.6 lbs
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||||||
| 3/8" | 13/32" | 1" | 3/32" | 200 |
3738061
|
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Item Number: 3738061
Package Weight: 3.2 lbs
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||||||
| 7/16" | 15/32" | 1-1/4" | 3/32" | 50 |
373807
|
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|
Item Number: 373807
Package Weight: 1.4 lbs
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| 7/16" | 15/32" | 1-1/4" | 3/32" | 100 |
3738071
|
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Item Number: 3738071
Package Weight: 2 lbs
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||||||
| 1/2" | 17/32" | 1-3/8" | 1/8" | 50 |
373808
|
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Item Number: 373808
Package Weight: 2.2 lbs
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| 1/2" | 17/32" | 1-3/8" | 1/8" | 100 |
3738081
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Item Number: 3738081
Package Weight: 4.5 lbs
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Grade 8 (SAE) Flat Washers - Yellow Zinc Plated
Engineered for severe workloads, these Grade 8 (SAE) washers feature a thicker design and yellow zinc finish for added corrosion resistance. A tight ID offers stable clamp force, especially in automotive or heavy machinery. Pair with Grade 8 bolts to prevent distortion in demanding applications.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 1/4" | 9/32" | 5/8" | 5/64" | 100 |
373904
|
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Item Number: 373904
Package Weight: 0.5 lbs
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||||||
| 1/4" | 9/32" | 5/8" | 5/64" | 200 |
3739041
|
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Item Number: 3739041
Package Weight: 1.1 lbs
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||||||
| 1/4" | 9/32" | 5/8" | 5/64" | 500 |
3739042
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Item Number: 3739042
Package Weight: 2.7 lbs
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||||||
| 5/16" | 11/32" | 11/16" | 3/32" | 100 |
373905
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Item Number: 373905
Package Weight: 0.7 lbs
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||||||
| 5/16" | 11/32" | 11/16" | 3/32" | 200 |
3739051
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Item Number: 3739051
Package Weight: 1.4 lbs
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||||||
| 5/16" | 11/32" | 11/16" | 3/32" | 500 |
3739052
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Item Number: 3739052
Package Weight: 3.2 lbs
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||||||
| 3/8" | 13/32" | 13/16" | 3/32" | 100 |
373906
|
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Item Number: 373906
Package Weight: 0.9 lbs
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||||||
| 3/8" | 13/32" | 13/16" | 3/32" | 200 |
3739061
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Item Number: 3739061
Package Weight: 1.7 lbs
|
||||||
| 7/16" | 15/32" | 59/64" | 3/32" | 100 |
373907
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Item Number: 373907
Package Weight: 1.4 lbs
|
||||||
| 7/16" | 15/32" | 59/64" | 3/32" | 200 |
3739071
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Item Number: 3739071
Package Weight: 2.6 lbs
|
||||||
| 1/2" | 17/32" | 1-1/16" | 7/64" | 50 |
373908
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Item Number: 373908
Package Weight: 1.2 lbs
|
||||||
| 1/2" | 17/32" | 1-1/16" | 7/64" | 100 |
3739081
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Item Number: 3739081
Package Weight: 2.4 lbs
|
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Grade 8 (USS) Extra Thick Flat Washers - Yellow Zinc Plated
Built for hefty clamp loads, these extra‑thick Grade 8 (USS) washers provide superior resistance to dishing or distortion. Yellow zinc plating helps guard against rust in heavy‑duty machinery. Pair with Grade 8 bolts and nuts in industrial or automotive assemblies needing maximum load stability.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 1/4" | 5/16" | 3/4" | 7/64" | 50 |
373754
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Item Number: 373754
Package Weight: 0.5 lbs
|
||||||
| 5/16" | 3/8" | 7/8" | 1/8" | 50 |
373755
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Item Number: 373755
Package Weight: 0.7 lbs
|
||||||
| 3/8" | 7/16" | 1" | 1/8" | 50 |
373756
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Item Number: 373756
Package Weight: 1.1 lbs
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||||||
| 7/16" | 1/2" | 1-1/4" | 9/64" | 25 |
373757
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Item Number: 373757
Package Weight: 0.9 lbs
|
||||||
| 1/2" | 9/16" | 1-3/8" | 11/64" | 25 |
373758
|
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Item Number: 373758
Package Weight: 1.6 lbs
|
||||||
| 9/16" | 5/8" | 1-1/2" | 11/64" | 25 |
373759
|
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Item Number: 373759
Package Weight: 2 lbs
|
||||||
| 5/8" | 11/16" | 1-3/4" | 3/16" | 25 |
373760
|
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Item Number: 373760
Package Weight: 2.6 lbs
|
||||||
| 3/4" | 13/16" | 2" | 3/16" | 10 |
373762
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Item Number: 373762
Package Weight: 1.4 lbs
|
||||||
| 7/8" | 15/16" | 2-1/4" | 1/4" | 10 |
373764
|
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Item Number: 373764
Package Weight: 2.2 lbs
|
||||||
| 1" | 1-1/16" | 2-1/2" | 1/4" | 10 |
373766
|
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Item Number: 373766
Package Weight: 2.7 lbs
|
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Grade 8 (SAE) Extra Thick Flat Washers - Yellow Zinc Plated
Thicker than standard washers, these Grade 8 (SAE) washers distribute force more evenly to reduce distortion under high torque. A yellow zinc plating wards off corrosion, extending service life. Use them with Grade 8 bolts in challenging MRO or industrial tasks demanding extra strength.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 1/4" | 9/32" | 5/8" | 7/64" | 50 |
373704
|
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|
Item Number: 373704
Package Weight: 0.4 lbs
|
||||||
| 5/16" | 11/32" | 11/16" | 1/8" | 50 |
373705
|
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Item Number: 373705
Package Weight: 0.4 lbs
|
||||||
| 3/8" | 13/32" | 13/16" | 1/8" | 50 |
373706
|
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Item Number: 373706
Package Weight: 0.7 lbs
|
||||||
| 7/16" | 15/32" | 59/64" | 9/64" | 25 |
373707
|
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Item Number: 373707
Package Weight: 0.5 lbs
|
||||||
| 1/2" | 17/32" | 1-1/16" | 11/64" | 25 |
373708
|
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Item Number: 373708
Package Weight: 0.8 lbs
|
||||||
| 9/16" | 21/32" | 1-3/16" | 11/64" | 25 |
373709
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Item Number: 373709
Package Weight: 1 lbs
|
||||||
| 5/8" | 11/16" | 1-5/16" | 3/16" | 25 |
373710
|
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Item Number: 373710
Package Weight: 1.4 lbs
|
||||||
| 3/4" | 13/16" | 1-15/32" | 3/16" | 10 |
373712
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Item Number: 373712
Package Weight: 0.6 lbs
|
||||||
| 7/8" | 15/16" | 1-3/4" | 1/4" | 10 |
373714
|
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Item Number: 373714
Package Weight: 1.1 lbs
|
||||||
| 1" | 1-1/16" | 2" | 1/4" | 10 |
373716
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Item Number: 373716
Package Weight: 0.1 lbs
|
||||||
| 1-1/8" | 1-1/4" | 2-1/4" | 1/4" | 5 |
373718
|
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Item Number: 373718
Package Weight: 1 lbs
|
||||||
| 1-1/4" | 1-3/8" | 2-1/2" | 1/4" | 5 |
373720
|
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Item Number: 373720
Package Weight: 1.1 lbs
|
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Grade 8 (USS) Flat Washers - Plain Finish
Designed for top‑tier strength, these plain‑finish Grade 8 (USS) washers withstand high torque while preventing dishing. Their burr‑free construction helps maintain proper clamp load in demanding machinery or automotive applications. For a robust joint, match with Grade 8 cap screws.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 1/4" | 5/16" | 3/4" | 1/16" | 100 |
377934
|
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Item Number: 377934
Package Weight: 0.6 lbs
|
||||||
| 5/16" | 3/8" | 7/8" | 5/64" | 100 |
377935
|
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Item Number: 377935
Package Weight: 1.1 lbs
|
||||||
| 3/8" | 7/16" | 1" | 5/64" | 100 |
377936
|
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Item Number: 377936
Package Weight: 1.3 lbs
|
||||||
| 7/16" | 1/2" | 1-1/4" | 5/64" | 100 |
377937
|
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Item Number: 377937
Package Weight: 2.2 lbs
|
||||||
| 1/2" | 9/16" | 1-3/8" | 7/64" | 50 |
377938
|
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Item Number: 377938
Package Weight: 1.8 lbs
|
||||||
| 9/16" | 5/8" | 1-1/2" | 7/64" | 50 |
377939
|
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Item Number: 377939
Package Weight: 2.2 lbs
|
||||||
| 5/8" | 11/16" | 1-3/4" | 1/8" | 50 |
377940
|
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Item Number: 377940
Package Weight: 3.6 lbs
|
||||||
| 3/4" | 13/16" | 2" | 1/8" | 10 |
377942
|
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Item Number: 377942
Package Weight: 1 lbs
|
||||||
| 7/8" | 15/16" | 2-1/4" | 5/32" | 10 |
377944
|
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Item Number: 377944
Package Weight: 1.3 lbs
|
||||||
| 1" | 1-1/16" | 2-1/2" | 5/32" | 10 |
377946
|
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Item Number: 377946
Package Weight: 1.6 lbs
|
||||||
| 1-1/8" | 1-1/4" | 2-3/4" | 5/32" | 5 |
377948
|
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Item Number: 377948
Package Weight: 1 lbs
|
||||||
| 1-1/4" | 1-3/8" | 3" | 5/32" | 5 |
377950
|
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Item Number: 377950
Package Weight: 1.1 lbs
|
||||||
Grade 8 (SAE) Flat Washers - Plain Finish
Enhance load distribution in high‑stress assemblies with these Grade 8 (SAE) flat washers. Plain‑finish steel resists dishing for better torque control, while a thicker design handles heavy loads in engines or industrial machinery. Match with Grade 8 fasteners for durable, secure connections.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 1/4" | 9/32" | 5/8" | 5/64" | 100 |
377904
|
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|
Item Number: 377904
Package Weight: 0.5 lbs
|
||||||
| 5/16" | 11/32" | 11/16" | 3/32" | 100 |
377905
|
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Item Number: 377905
Package Weight: 0.5 lbs
|
||||||
| 3/8" | 13/32" | 13/16" | 3/32" | 100 |
377906
|
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Item Number: 377906
Package Weight: 0.7 lbs
|
||||||
| 7/16" | 15/32" | 59/64" | 3/32" | 100 |
377907
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Item Number: 377907
Package Weight: 0.9 lbs
|
||||||
| 1/2" | 17/32" | 1-1/16" | 7/64" | 50 |
377908
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Item Number: 377908
Package Weight: 1 lbs
|
||||||
| 9/16" | 19/32" | 1-3/16" | 7/64" | 50 |
377909
|
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Item Number: 377909
Package Weight: 1.2 lbs
|
||||||
| 5/8" | 11/16" | 1-5/16" | 1/8" | 50 |
377910
|
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Item Number: 377910
Package Weight: 1.7 lbs
|
||||||
| 3/4" | 13/16" | 1-15/32" | 9/64" | 25 |
377912
|
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Item Number: 377912
Package Weight: 1 lbs
|
||||||
| 7/8" | 15/16" | 1-3/4" | 9/64" | 10 |
377914
|
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Item Number: 377914
Package Weight: 0.7 lbs
|
||||||
| 1" | 1-1/8" | 2" | 9/64" | 10 |
377916
|
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Item Number: 377916
Package Weight: 0.9 lbs
|
||||||
| 1-1/8" | 1-1/4" | 2-1/4" | 9/64" | 5 |
377918
|
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Item Number: 377918
Package Weight: 0.6 lbs
|
||||||
| 1-1/4" | 1-3/8" | 2-1/2" | 5/32" | 5 |
377920
|
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Item Number: 377920
Package Weight: 0.7 lbs
|
||||||
Grade 8 (USS) Flat Washers - Armor Coat™
Featuring a proven Armor Coat™ finish, these Grade 8 (USS) washers withstand extreme corrosion tests and offer 150,000 PSI tensile strength. They excel in harsh MRO environments where stainless steel might fail. Pair with Armor Coat™ Grade 8 bolts for maximum toughness in off‑road or marine machinery.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 1/4" | 5/16" | 3/4" | 1/16" | 100 |
376104
|
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Item Number: 376104
Package Weight: 0.7 lbs
|
||||||
| 5/16" | 3/8" | 7/8" | 1/16" | 100 |
376105
|
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Item Number: 376105
Package Weight: 1 lbs
|
||||||
| 3/8" | 7/16" | 1" | 1/16" | 100 |
376106
|
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Item Number: 376106
Package Weight: 1.3 lbs
|
||||||
| 7/16" | 1/2" | 1-1/4" | 1/16" | 100 |
376107
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Item Number: 376107
Package Weight: 2 lbs
|
||||||
| 1/2" | 9/16" | 1-3/8" | 7/64" | 50 |
376108
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Item Number: 376108
Package Weight: 1.7 lbs
|
||||||
| 5/8" | 21/32" | 1-3/4" | 7/64" | 25 |
376110
|
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Item Number: 376110
Package Weight: 1.8 lbs
|
||||||
| 3/4" | 13/16" | 2" | 1/8" | 25 |
376112
|
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Item Number: 376112
Package Weight: 2.3 lbs
|
||||||
Grade 8 (SAE) Flat Washers - Armor Coat™
Armor Coat™ delivers exceptional corrosion resistance on these Grade 8 (SAE) washers, passing 1,000‑hour salt spray tests. They’re up to 250% stronger than stainless steel, making them ideal for marine, chemical, or off‑road applications. Use with Armor Coat™ Grade 8 bolts for a tough, long‑lasting assembly.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 1/4" | 9/32" | 5/8" | 1/16" | 100 |
376004
|
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Item Number: 376004
Package Weight: 0.5 lbs
|
||||||
| 5/16" | 21/64" | 11/16" | 1/16" | 100 |
376005
|
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Item Number: 376005
Package Weight: 0.5 lbs
|
||||||
| 3/8" | 25/64" | 13/16" | 1/16" | 100 |
376006
|
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Item Number: 376006
Package Weight: 0.7 lbs
|
||||||
| 7/16" | 15/32" | 59/64" | 1/16" | 100 |
376007
|
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Item Number: 376007
Package Weight: 0.8 lbs
|
||||||
| 1/2" | 17/32" | 1-1/16" | 7/64" | 50 |
376008
|
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Item Number: 376008
Package Weight: 0.9 lbs
|
||||||
| 5/8" | 45/64" | 1-5/16" | 7/64" | 25 |
376010
|
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Item Number: 376010
Package Weight: 0.8 lbs
|
||||||
| 3/4" | 53/64" | 1-15/32" | 1/8" | 25 |
376012
|
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Item Number: 376012
Package Weight: 1 lbs
|
||||||
Grade 5 (USS) Flat Washers - Zinc Plated
Zinc‑plated for moderate corrosion resistance, these Grade 5 (USS) washers ensure smooth load distribution under standard‑duty bolts. Burr‑free edges aid controlled torque, making them perfect for automotive or mechanical repairs. For best results, pair with Grade 5 cap screws in everyday MRO tasks.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 1/4" | 5/16" | 3/4" | 1/16" | 100 |
373504
|
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|
Item Number: 373504
Package Weight: 0.7 lbs
|
||||||
| 1/4" | 5/16" | 3/4" | 1/16" | 200 |
3735041
|
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Item Number: 3735041
Package Weight: 1.4 lbs
|
||||||
| 1/4" | 5/16" | 3/4" | 1/16" | 500 |
3735042
|
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Item Number: 3735042
Package Weight: 3.5 lbs
|
||||||
| 5/16" | 3/8" | 7/8" | 5/64" | 100 |
373505
|
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|
Item Number: 373505
Package Weight: 1.1 lbs
|
||||||
| 5/16" | 3/8" | 7/8" | 5/64" | 200 |
3735051
|
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Item Number: 3735051
Package Weight: 2.2 lbs
|
||||||
| 5/16" | 3/8" | 7/8" | 5/64" | 500 |
3735052
|
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Item Number: 3735052
Package Weight: 5.5 lbs
|
||||||
| 3/8" | 7/16" | 1" | 5/64" | 50 |
373506
|
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|
Item Number: 373506
Package Weight: 0.9 lbs
|
||||||
| 3/8" | 7/16" | 1" | 5/64" | 100 |
3735061
|
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Item Number: 3735061
Package Weight: 1.8 lbs
|
||||||
| 7/16" | 1/2" | 1-1/4" | 5/64" | 50 |
373507
|
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|
Item Number: 373507
Package Weight: 1.1 lbs
|
||||||
| 7/16" | 1/2" | 1-1/4" | 5/64" | 100 |
3735071
|
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Item Number: 3735071
Package Weight: 2.2 lbs
|
||||||
| 1/2" | 9/16" | 1-3/8" | 7/64" | 50 |
373508
|
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|
Item Number: 373508
Package Weight: 2 lbs
|
||||||
| 1/2" | 9/16" | 1-3/8" | 7/64" | 100 |
3735081
|
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Item Number: 3735081
Package Weight: 4 lbs
|
||||||
Grade 5 (SAE) Flat Washers - Zinc Plated
Use these zinc‑plated Grade 5 (SAE) washers to distribute load and prevent surface damage in automotive or machinery assemblies. A burr‑free surface ensures a secure fit, while the zinc finish offers moderate corrosion protection. Pair with Grade 5 bolts for reliable performance under standard MRO conditions.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 1/4" | 9/32" | 5/8" | 1/16" | 100 |
373604
|
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|
Item Number: 373604
Package Weight: 0.5 lbs
|
||||||
| 1/4" | 9/32" | 5/8" | 1/16" | 200 |
3736041
|
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Item Number: 3736041
Package Weight: 1 lbs
|
||||||
| 1/4" | 9/32" | 5/8" | 1/16" | 500 |
3736042
|
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|
Item Number: 3736042
Package Weight: 2.5 lbs
|
||||||
| 5/16" | 11/32" | 11/16" | 1/16" | 100 |
373605
|
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|
Item Number: 373605
Package Weight: 0.6 lbs
|
||||||
| 5/16" | 11/32" | 11/16" | 1/16" | 200 |
3736051
|
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|
Item Number: 3736051
Package Weight: 1.2 lbs
|
||||||
| 5/16" | 11/32" | 11/16" | 1/16" | 500 |
3736052
|
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Item Number: 3736052
Package Weight: 3 lbs
|
||||||
| 3/8" | 13/32" | 13/16" | 1/16" | 100 |
373606
|
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|
Item Number: 373606
Package Weight: 0.8 lbs
|
||||||
| 3/8" | 13/32" | 13/16" | 1/16" | 200 |
3736061
|
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Item Number: 3736061
Package Weight: 1.6 lbs
|
||||||
| 7/16" | 15/32" | 15/16" | 1/16" | 50 |
373607
|
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|
Item Number: 373607
Package Weight: 0.5 lbs
|
||||||
| 7/16" | 15/32" | 15/16" | 1/16" | 100 |
3736071
|
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Item Number: 3736071
Package Weight: 1 lbs
|
||||||
| 1/2" | 17/32" | 1-1/16" | 3/32" | 50 |
373608
|
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|
Item Number: 373608
Package Weight: 0.9 lbs
|
||||||
| 1/2" | 17/32" | 1-1/16" | 3/32" | 100 |
3736081
|
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Item Number: 3736081
Package Weight: 1.8 lbs
|
||||||
Grade 5 (SAE) Flat Washers - Plain Finish
Ideal for everyday fastening needs, these plain‑finish Grade 5 (SAE) washers help maintain clamp load and reduce friction. Their burr‑free design prevents scratching, making them well‑suited for automotive or general machinery. Combine with Grade 5 bolts for consistent tension in moderate environments.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| #8 | 3/16" | 7/16" | 3/64" | 50 |
3733602
|
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|
|
||||||
Grade 5 Flat Washers
Built for standard‑duty tasks, these Grade 5 flat washers spread bolt load evenly to minimize surface wear. A plain finish works well indoors or in low‑corrosion settings, while high‑strength steel prevents distortion under moderate stress. Pair with Grade 5 fasteners for stable, secure connections.
| Bolt Size | Inside Diameter | Outside Diameter | Package Qty | Item # |
Price
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|---|---|---|---|---|---|
| 1/4" | 5/16" | 47/64" | 100 |
377504
|
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|
Item Number: 377504
Package Weight: 0.7 lbs
|
|||||
| 5/16" | 3/8" | 7/8" | 100 |
377505
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|
Item Number: 377505
Package Weight: 1.3 lbs
|
|||||
| 3/8" | 7/16" | 1" | 100 |
377506
|
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|
Item Number: 377506
Package Weight: 0.1 lbs
|
|||||
| 7/16" | 1/2" | 1-1/4" | 100 |
377507
|
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|
Item Number: 377507
Package Weight: 2.4 lbs
|
|||||
| 1/2" | 9/16" | 1-3/8" | 100 |
377508
|
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|
Item Number: 377508
Package Weight: 3.9 lbs
|
|||||
| 9/16" | 5/8" | 1-15/32" | 50 |
377509
|
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|
Item Number: 377509
Package Weight: 0.9 lbs
|
|||||
| 5/8" | 11/16" | 1-3/4" | 50 |
377510
|
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|
|
|||||
| 3/4" | 13/16" | 2" | 50 |
377512
|
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|
|
|||||
| 7/8" | 15/16" | 2-1/4" | 50 |
377514
|
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|
|
|||||
| 1" | 1-1/16" | 2-1/2" | 50 |
377516
|
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|
|
|||||
L9 (USS) Flat Washers
Offering the strongest off‑the‑shelf fastening system, these L9® (USS) washers ensure superior clamp loads in high‑stress conditions. Zinc yellow plating fights corrosion, while the robust design handles severe service in heavy machinery or trucking. Use with L9® bolts for maximum holding strength and longevity.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 1/4" | 9/32" | 3/4" | 1/16" | 100 |
379054
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|
Item Number: 379054
Package Weight: 0.8 lbs
|
||||||
| 5/16" | 11/32" | 7/8" | 3/32" | 100 |
379055
|
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|
Item Number: 379055
Package Weight: 1.2 lbs
|
||||||
| 3/8" | 13/32" | 1" | 3/32" | 100 |
379056
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Item Number: 379056
Package Weight: 1.6 lbs
|
||||||
| 7/16" | 15/32" | 1-1/4" | 7/64" | 50 |
379057
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|
Item Number: 379057
Package Weight: 1.4 lbs
|
||||||
| 1/2" | 17/32" | 1-3/8" | 9/64" | 50 |
379058
|
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|
Item Number: 379058
Package Weight: 2.2 lbs
|
||||||
| 5/8" | 21/32" | 1-3/4" | 3/16" | 25 |
379060
|
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|
Item Number: 379060
Package Weight: 2.1 lbs
|
||||||
| 3/4" | 25/32" | 2" | 3/16" | 25 |
379062
|
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|
Item Number: 379062
Package Weight: 2.6 lbs
|
||||||
| 7/8" | 15/16" | 2-1/4" | 3/16" | 10 |
379064
|
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|
Item Number: 379064
Package Weight: 1.4 lbs
|
||||||
| 1" | 1-1/16" | 2-1/2" | 3/16" | 10 |
379066
|
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|
Item Number: 379066
Package Weight: 1.6 lbs
|
||||||
L9 (SAE) Flat Washers
Engineered for extreme stress applications, these L9® (SAE) washers feature RoHS‑compliant zinc yellow plating and the highest mechanical strength in off‑the‑shelf fastening. They maximize clamp load in heavy equipment or severe service environments. Pair with L9® bolts for unrivaled holding power.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 1/4" | 9/32" | 5/8" | 1/16" | 100 |
379004
|
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|
Item Number: 379004
Package Weight: 0.5 lbs
|
||||||
| 5/16" | 11/32" | 11/16" | 1/16" | 100 |
379005
|
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|
Item Number: 379005
Package Weight: 0.5 lbs
|
||||||
| 3/8" | 13/32" | 13/16" | 3/32" | 100 |
379006
|
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|
Item Number: 379006
Package Weight: 1 lbs
|
||||||
| 7/16" | 15/32" | 15/16" | 3/32" | 50 |
379007
|
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|
Item Number: 379007
Package Weight: 0.7 lbs
|
||||||
| 1/2" | 17/32" | 1-1/16" | 3/32" | 50 |
379008
|
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|
Item Number: 379008
Package Weight: 0.9 lbs
|
||||||
| 9/16" | 19/32" | 1-3/16" | 3/32" | 25 |
379009
|
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|
Item Number: 379009
Package Weight: 0.5 lbs
|
||||||
| 5/8" | 21/32" | 1-5/16" | 11/64" | 25 |
379010
|
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|
Item Number: 379010
Package Weight: 1.1 lbs
|
||||||
| 3/4" | 13/16" | 1-1/2" | 11/64" | 25 |
379012
|
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|
Item Number: 379012
Package Weight: 1.3 lbs
|
||||||
| 7/8" | 15/16" | 1-3/4" | 11/64" | 10 |
379014
|
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|
Item Number: 379014
Package Weight: 0.7 lbs
|
||||||
| 1" | 1-1/16" | 2" | 11/64" | 10 |
379016
|
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|
Item Number: 379016
Package Weight: 1 lbs
|
||||||
Metric Alloy Steel Flat Washers
Suitable for use with Class 10.9 cap screws, these alloy steel metric washers resist bending to secure full clamp force. Zinc plating offers moderate corrosion protection, while Rc 38–45 hardness ensures durability. Ideal for industrial assembly lines needing reliable fastener performance.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| M6 | 6.4 mm | 12.5 mm | 1.6 mm | 100 |
453706
|
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|
Item Number: 453706
Package Weight: 0.2 lbs
|
||||||
| M8 | 8.4 mm | 17 mm | 1.6 mm | 50 |
453708
|
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|
Item Number: 453708
Package Weight: 0.2 lbs
|
||||||
| M10 | 10.5 mm | 21 mm | 2 mm | 50 |
453710
|
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|
Item Number: 453710
Package Weight: 0.4 lbs
|
||||||
| M12 | 13 mm | 24 mm | 2.5 mm | 50 |
453712
|
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|
Item Number: 453712
Package Weight: 0.7 lbs
|
||||||
| M14 | 15 mm | 28 mm | 2.5 mm | 25 |
453714
|
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|
Item Number: 453714
Package Weight: 0.5 lbs
|
||||||
| M16 | 17 mm | 30 mm | 3 mm | 25 |
453716
|
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|
Item Number: 453716
Package Weight: 0.6 lbs
|
||||||
| M18 | 19 mm | 34 mm | 3 mm | 25 |
453718
|
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|
Item Number: 453718
Package Weight: 0.9 lbs
|
||||||
| M20 | 21 mm | 37 mm | 3 mm | 25 |
453720
|
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|
Item Number: 453720
Package Weight: 1 lbs
|
||||||
| M22 | 23 mm | 39 mm | 3 mm | 10 |
453722
|
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|
Item Number: 453722
Package Weight: 0.4 lbs
|
||||||
| M24 | 25 mm | 44 mm | 4 mm | 10 |
453724
|
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|
Item Number: 453724
Package Weight: 0.7 lbs
|
||||||
Metric Zinc Plated Flat Washers
Ideal for moderate load distribution, these zinc‑plated metric washers help protect surfaces from wear. The corrosion‑resistant finish suits automotive, equipment repair, or general industrial needs. Apply the correct torque with matching metric bolts for reliable clamping in everyday MRO applications.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| M4 | 4.3 mm | 9 mm | 0.8 mm | 100 |
453504
|
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|
|
||||||
| M5 | 5.3 mm | 10 mm | 1 mm | 50 |
453505
|
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|
|
||||||
| M6 | 6.4 mm | 12.5 mm | 1.6 mm | 50 |
453506
|
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|
|
||||||
| M7 | 7.4 mm | 14 mm | 1.6 mm | 50 |
453507
|
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|
|
||||||
| M8 | 8.4 mm | 17 mm | 1.6 mm | 50 |
453508
|
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|
|
||||||
| M10 | 10.5 mm | 20 mm | 2 mm | 50 |
453510
|
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|
|
||||||
| M12 | 13 mm | 24 mm | 2.5 mm | 50 |
453512
|
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|
|
||||||
| M14 | 15 mm | 28 mm | 2.5 mm | 25 |
453514
|
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|
|
||||||
| M16 | 17 mm | 30 mm | 3 mm | 25 |
453516
|
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|
|
||||||
| M18 | 19 mm | 34 mm | 3 mm | 25 |
453518
|
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|
|
||||||
| M20 | 21 mm | 37 mm | 3 mm | 25 |
453520
|
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|
|
||||||
| M24 | 25 mm | 44 mm | 4 mm | 10 |
453524
|
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|
|
||||||
Metric Plain Finish Flat Washers
These plain‑finish Class 8 metric washers distribute load evenly under bolt heads or nuts, improving joint reliability. The steel construction resists deformation under typical MRO loads. Use them with Class 8 metric bolts for secure, consistent clamp force in machinery or automotive assemblies.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| M4 | 4.3 mm | 9 mm | 0.8 mm | 50 |
4533504
|
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|
|
||||||
| M5 | 5.3 mm | 10 mm | 1 mm | 50 |
4533505
|
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|
|
||||||
| M6 | 6.4 mm | 12.5 mm | 1.6 mm | 50 |
4533506
|
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|
|
||||||
| M8 | 8.4 mm | 17 mm | 1.6 mm | 50 |
4533508
|
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|
|
||||||
| M10 | 10.5 mm | 21 mm | 2 mm | 50 |
4533510
|
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|
|
||||||
Medium Carbon Steel Flat Washers
These medium carbon steel washers, designed for use with Class 10.9 screws, minimize surface damage by distributing load effectively. Zinc plating offers moderate corrosion protection, while the robust build resists dishing in heavy‑duty MRO or machinery applications. Install with proper torque for best results.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| M6 | 6.4 mm | 12.5 mm | 1.6 mm | 50 |
453806
|
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|
Item Number: 453806
Package Weight: 0.1 lbs
|
||||||
| M8 | 8.4 mm | 17 mm | 1.6 mm | 50 |
453808
|
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|
Item Number: 453808
Package Weight: 0.2 lbs
|
||||||
| M10 | 10.5 mm | 21 mm | 2 mm | 50 |
453810
|
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|
Item Number: 453810
Package Weight: 0.4 lbs
|
||||||
| M12 | 13 mm | 24 mm | 2.5 mm | 25 |
453812
|
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|
Item Number: 453812
Package Weight: 0.4 lbs
|
||||||
| M14 | 15 mm | 28 mm | 2.5 mm | 25 |
453814
|
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|
Item Number: 453814
Package Weight: 0.5 lbs
|
||||||
| M16 | 17 mm | 30 mm | 3 mm | 25 |
453816
|
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|
Item Number: 453816
Package Weight: 0.6 lbs
|
||||||
| M18 | 19 mm | 34 mm | 3 mm | 25 |
453818
|
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|
Item Number: 453818
Package Weight: 0.7 lbs
|
||||||
| M20 | 21 mm | 37 mm | 3 mm | 25 |
453820
|
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|
Item Number: 453820
Package Weight: 0.9 lbs
|
||||||
| M22 | 23 mm | 39 mm | 3 mm | 10 |
453822
|
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|
Item Number: 453822
Package Weight: 0.4 lbs
|
||||||
| M24 | 25 mm | 44 mm | 4 mm | 10 |
453824
|
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|
Item Number: 453824
Package Weight: 0.7 lbs
|
||||||
Grade 2 Galvanized Flat Washers
Hot‑dip galvanized for excellent corrosion protection, these Grade 2 washers meet ASTM F844 for A307 fasteners. Ideal in construction or agricultural machinery, they ensure broad load distribution under moderate stress. Use them outdoors or in wet conditions where rust resistance is paramount.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 1/4" | 5/16" | 3/4" | 1/16" | 100 |
372904
|
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|
Item Number: 372904
Package Weight: 0.6 lbs
|
||||||
| 5/16" | 3/8" | 7/8" | 5/64" | 100 |
372905
|
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Item Number: 372905
Package Weight: 1.1 lbs
|
||||||
| 3/8" | 7/16" | 1" | 5/64" | 100 |
372906
|
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Item Number: 372906
Package Weight: 1.3 lbs
|
||||||
| 1/2" | 9/16" | 1-3/8" | 7/64" | 50 |
372908
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Item Number: 372908
Package Weight: 1.6 lbs
|
||||||
| 5/8" | 11/16" | 1-3/4" | 9/64" | 25 |
372910
|
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Item Number: 372910
Package Weight: 1.8 lbs
|
||||||
| 3/4" | 13/16" | 2" | 5/32" | 25 |
372912
|
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|
Item Number: 372912
Package Weight: 2.7 lbs
|
||||||
Nylon Flat Washers
Non‑conductive and lightweight, these 6/6 nylon washers reduce friction, absorb vibration, and resist oils or chemicals up to 185°F. They’re ideal for electrical or corrosive environments where metal washers could fail. For secure fastening, combine with appropriate bolts and moderate torque in MRO assemblies.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 1/4" | 0.257" | 1/2" | 0.032" | 100 |
375208
|
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Item Number: 375208
Package Weight: 0.1 lbs
|
||||||
| 1/4" | 0.257" | 1/2" | 0.062" | 100 |
375209
|
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|
Item Number: 375209
Package Weight: 0.1 lbs
|
||||||
| 5/16" | 0.317" | 1/2" | 0.032" | 50 |
375210
|
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|
Item Number: 375210
Package Weight: 0.1 lbs
|
||||||
| 5/16" | 0.317" | 1/2" | 0.062" | 50 |
375211
|
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|
Item Number: 375211
Package Weight: 0.1 lbs
|
||||||
| 3/8" | 0.38" | 5/8" | 0.032" | 50 |
375212
|
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|
Item Number: 375212
Package Weight: 0.1 lbs
|
||||||
| 3/8" | 0.38" | 5/8" | 0.062" | 50 |
375213
|
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|
Item Number: 375213
Package Weight: 0.1 lbs
|
||||||
| 7/16" | 0.443" | 3/4" | 0.032" | 50 |
375214
|
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|
Item Number: 375214
Package Weight: 0.1 lbs
|
||||||
| 7/16" | 0.443" | 3/4" | 0.062" | 50 |
375215
|
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|
Item Number: 375215
Package Weight: 0.1 lbs
|
||||||
| 1/2" | 0.505" | 3/4" | 0.032" | 50 |
375216
|
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|
Item Number: 375216
Package Weight: 0.1 lbs
|
||||||
| 1/2" | 0.505" | 3/4" | 0.062" | 50 |
375217
|
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|
Item Number: 375217
Package Weight: 0.1 lbs
|
||||||
| #4 | 0.115" | 1/4" | 0.032" | 100 |
375200
|
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|
Item Number: 375200
Package Weight: 0.1 lbs
|
||||||
| #4 | 0.115" | 1/4" | 0.062" | 100 |
375201
|
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|
Item Number: 375201
Package Weight: 0.1 lbs
|
||||||
Silicon Bronze Flat Washers
Silicon bronze provides strong corrosion resistance, making these washers perfect for marine, electrical, or chemical environments. Alloy 651’s non‑magnetic properties help in power generation, distribution, or sea‑exposed platforms. Install them where conductivity and long‑term durability matter most.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 1/4" | 0.281" | 0.625" | 0.05" | 50 |
373444
|
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|
Item Number: 373444
Package Weight: 0.2 lbs
|
||||||
| 5/16" | 0.344" | 0.75" | 0.062" | 50 |
373445
|
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|
Item Number: 373445
Package Weight: 0.3 lbs
|
||||||
| 3/8" | 0.406" | 0.875" | 0.062" | 25 |
373446
|
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|
Item Number: 373446
Package Weight: 0.3 lbs
|
||||||
| 1/2" | 0.563" | 1.25" | 0.078" | 25 |
373448
|
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|
Item Number: 373448
Package Weight: 0.7 lbs
|
||||||
Brass Flat Washers
Perfect for decorative or electrical projects, these brass washers resist corrosion and minimize friction under moderate load. Their smooth finish suits plumbing fixtures or ornamental hardware, while inherent conductivity makes them useful in certain electrical installations. Employ where aesthetics and function align.
| Bolt Size | Inside Diameter | Outside Diameter | Package Qty | Item # |
Price
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|---|---|---|---|---|---|
| 7/16" | 0.495" - 0.505" | 1.115" - 1.135" | 25 |
373407
|
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|
|
|||||
| 1/2" | 0.557" - 0.577" | 1.243" - 1.28" | 25 |
373408
|
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|
|
|||||
| 5/8" | 0.678" - 0.698" | 1.49" - 1.51" | 10 |
373410
|
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|
|
|||||
| 3/4" | 0.802" - 0.822" | 1.865" - 1.885" | 10 |
373412
|
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|
|
|||||
| #4 | 0.115" - 0.13" | 0.271" - 0.291" | 100 |
373400
|
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|
|
|||||
| #6L | 0.142" - 0.156" | 0.368" - 0.383" | 100 |
373421
|
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|
|
|||||
| #6S | 0.142" - 0.156" | 0.305" - 0.318" | 100 |
373401
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| #8L | 0.167" - 0.181" | 0.43" - 0.449" | 100 |
373422
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| #8S | 0.167" - 0.181" | 0.368" - 0.383" | 100 |
373402
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| #10L | 0.195" - 0.21" | 0.49" - 0.51" | 100 |
373423
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| #10S | 0.195" - 0.21" | 0.43" - 0.449" | 100 |
373403
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| #12L | 0.218" - 0.238" | 0.552" - 0.572" | 100 |
373427
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Isoplastic Flat Washers
Made of fiberglass‑reinforced thermoplastic polyurethane, these isoplastic washers resist impact, corrosion, and extreme temperatures up to 366°F. Non‑conductive properties suit electrical equipment, while high tensile strength ensures durability in harsh conditions. Use for a lighter, rust‑free alternative to metal.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 3/8" | 0.39" | 3/4" | 0.06" | 25 |
375313
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Item Number: 375313
Package Weight: 0.1 lbs
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| 1/2" | 0.531" | 1" | 0.06" | 25 |
375317
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Item Number: 375317
Package Weight: 0.1 lbs
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F436 Galvanized Flat Washers
Hot‑dip galvanized for rust prevention, these F436 washers meet ASTM F436 standards for structural fasteners like A325 bolts. They provide superior corrosion protection in outdoor or demanding conditions, making them perfect for bridges, building frames, or heavy construction equipment.
| Bolt Size | Inside Diameter | Outside Diameter | Thickness | Package Qty | Item # |
Price
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|---|---|---|---|---|---|---|
| 5/8" | 11/16" | 1-5/16" | 0.177" | 50 |
375610
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Item Number: 375610
Package Weight: 1.7 lbs
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| 3/4" | 13/16" | 1-15/32" | 0.177" | 10 |
375612
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Item Number: 375612
Package Weight: 0.4 lbs
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| 7/8" | 15/16" | 1-3/4" | 0.177" | 10 |
375614
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Item Number: 375614
Package Weight: 0.7 lbs
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Featured Products:
- Grade 5 USS Zinc-Plated Flat Washer: Made from carbon steel with a zinc-plated finish. Ideal for use with Grade 5 Hex Head Cap Screws.
- Grade 8 SAE Yellow Zinc Alloy Steel Flat Washer: Features enhanced thickness for added resistance to dishing and distortion, close-fitting inner diameter for better load-bearing capacity and zinc yellow plating with Hexavalent Chromate for superior corrosion protection. Best paired with Grade 8 high head cap screws.
- Nylon Flat Washer: Made from natural white 6/6 nylon. They can withstand temperatures up to 185°F, reduce friction and wear between mating parts, and resist chemicals, greases and oils.
What is the difference between a flat washer and a SAE washer?
Flat washers are general-purpose washers used to distribute load, while SAE washers adhere to specific Society of Automotive Engineers standards regarding dimensions and materials, ensuring uniformity.
What temperature can Nylon Flat Washers withstand?
Nylon flat washers can perform effectively at temperatures up to 185°F, making them suitable for many industrial applications.
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