Split Lock Washers

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Grade 8 Split Lock Washers - Yellow Zinc Plated
Grade 8 Split Lock Washers - Yellow Zinc Plated
These high-strength, heat-treated alloy steel washers come with a yellow zinc finish for added corrosion resistance. Intended for Grade 8 assemblies, they ensure robust clamp load in critical applications. Made in the USA for dependable, consistent performance.
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1/4" 0.062" 100 Log in to view price
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5/16" 0.078" 100 Log in to view price
5/16" 0.078" 200 Log in to view price
5/16" 0.078" 500 Log in to view price
3/8" 0.094" 100 Log in to view price
3/8" 0.094" 200 Log in to view price
7/16" 0.109" 100 Log in to view price
7/16" 0.109" 200 Log in to view price
1/2" 0.125" 100 Log in to view price
1/2" 0.125" 200 Log in to view price
Grade 8 Split Lock Washers - Plain Finish
Grade 8 Split Lock Washers - Plain Finish
Designed for high-strength Grade 8 assemblies, these plain-finish alloy steel lock washers resist high clamping loads and minimize loosening under extreme vibration. Pair them with Grade 8 bolts for consistent torque retention and top-tier performance.
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5/16" 0.078" 100 Log in to view price
3/8" 0.094" 100 Log in to view price
7/16" 0.109" 100 Log in to view price
1/2" 0.125" 100 Log in to view price
9/16" 0.141" 50 Log in to view price
5/8" 0.156" 25 Log in to view price
3/4" 0.188" 25 Log in to view price
7/8" 0.219" 25 Log in to view price
1" 0.25" 25 Log in to view price
Grade 8 Split Lock Washers - Armor Coat™
Grade 8 Split Lock Washers - Armor Coat™
Heat-treated alloy steel washers paired with Grade 8 bolts for heavy-duty clamping. Finished in Armor Coat™, they deliver extreme corrosion resistance (1,000+ hours salt spray), outperforming standard plating. Perfect where maximum strength and rust protection are needed.
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5/16" 0.078" 100 Log in to view price
3/8" 0.094" 100 Log in to view price
7/16" 0.109" 100 Log in to view price
1/2" 0.125" 100 Log in to view price
5/8" 0.156" 25 Log in to view price
3/4" 0.188" 25 Log in to view price
Grade 5 Split Lock Washers - Zinc Plated
Grade 5 Split Lock Washers - Zinc Plated
Carbon steel lock washers for Grade 5 applications, finished with zinc plating to provide basic corrosion protection. They help maintain tension under moderate vibration. Pair with Grade 5 bolts for a dependable hold and reduced assembly loosening.
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7/16" 0.109" 100 Log in to view price
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Grade 5 Split Lock Washers - Plain Finish
Grade 5 Split Lock Washers - Plain Finish
Plain-finish carbon steel washers intended for Grade 5 bolts. They help maintain clamp load in moderate vibration conditions, reducing the chance of loosening. Pair them with Grade 5 screws in automotive, machinery, and general maintenance assemblies.
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9/16" 0.141" 50 Log in to view price
5/8" 0.156" 50 Log in to view price
3/4" 0.188" 50 Log in to view price
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1" 0.25" 50 Log in to view price
Metric Alloy Steel Lock Washers
Metric Alloy Steel Lock Washers
Built from RC 38–46 / 4037 alloy steel, these metric lock washers resist distortion under high clamp loads. Zinc plating adds corrosion protection, while the robust alloy construction suits demanding MRO tasks. Made in the USA for reliable quality.
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6.1 mm 11.8 mm 50 Log in to view price
8.1 mm 14.8 mm 50 Log in to view price
10.2 mm 18.1 mm 50 Log in to view price
12.2 mm 21.1 mm 50 Log in to view price
14.2 mm 24.1 mm 25 Log in to view price
16.2 mm 27.4 mm 25 Log in to view price
18.2 mm 29.4 mm 25 Log in to view price
20.2 mm 33.6 mm 25 Log in to view price
22.5 mm 35.9 mm 10 Log in to view price
24.5 mm 40 mm 10 Log in to view price
Metric Zinc Plated Lock Washers
Metric Zinc Plated Lock Washers
Zinc-plated spring steel lock washers that meet metric standards, offering enhanced corrosion resistance and reliable tension under vibration. Excellent choice for general assembly tasks, ensuring fasteners remain tight in mild to moderate conditions.
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4.1 mm 7.6 mm 50 Log in to view price
Item Number: 454504
Package Weight: 0.1 lbs
5.1 mm 9.2 mm 50 Log in to view price
Item Number: 454505
Package Weight: 0.1 lbs
6.1 mm 11.8 mm 50 Log in to view price
Item Number: 454506
Package Weight: 0.1 lbs
7.1 mm 12.8 mm 50 Log in to view price
Item Number: 454507
Package Weight: 0.1 lbs
8.1 mm 14.8 mm 50 Log in to view price
Item Number: 454508
Package Weight: 0.2 lbs
10.2 mm 18.1 mm 50 Log in to view price
Item Number: 454510
Package Weight: 0.3 lbs
12.2 mm 21.1 mm 50 Log in to view price
Item Number: 454512
Package Weight: 0.4 lbs
14.2 mm 24.1 mm 25 Log in to view price
Item Number: 454514
Package Weight: 0.5 lbs
16.2 mm 27.4 mm 25 Log in to view price
Item Number: 454516
Package Weight: 0.5 lbs
18.2 mm 29.4 mm 25 Log in to view price
Item Number: 454518
Package Weight: 0.6 lbs
20.2 mm 33.6 mm 25 Log in to view price
Item Number: 454520
Package Weight: 0.8 lbs
22.5 mm 35.9 mm 10 Log in to view price
Item Number: 454522
Package Weight: 0.4 lbs
Metric Plain Finish Lock Washers
Metric Plain Finish Lock Washers
Class 8 plain-finish spring steel washers designed for metric applications. They provide reliable tension to help prevent loosening under vibration, making them ideal for securing bolts and nuts in various MRO tasks where consistent clamp load is critical.
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4.1 mm 7.6 mm 50 Log in to view price
Item Number: 4544504
Package Weight: 0.2 lbs
5.1 mm 9.2 mm 50 Log in to view price
Item Number: 4544505
Package Weight: 0.1 lbs
6.1 mm 11.8 mm 50 Log in to view price
Item Number: 4544506
Package Weight: 0.1 lbs
8.1 mm 14.8 mm 50 Log in to view price
Item Number: 4544508
Package Weight: 0.2 lbs
10.2 mm 18.1 mm 50 Log in to view price
Item Number: 4544510
Package Weight: 0.4 lbs
18-8 Stainless Steel Medium Split Lock Washers
18-8 Stainless Steel Medium Split Lock Washers
Made from corrosion-resistant 18-8 stainless steel, these medium split lock washers secure threaded fasteners under vibration. Ideal for use with 18-8 stainless steel cap screws, they deliver consistent performance in moisture-prone or outdoor environments.
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1/4" 0.062" 100 Log in to view price
5/16" 0.078" 100 Log in to view price
3/8" 0.094" 50 Log in to view price
7/16" 0.109" 50 Log in to view price
1/2" 0.125" 50 Log in to view price
9/16" 0.141" 25 Log in to view price
5/8" 0.156" 25 Log in to view price
3/4" 0.188" 25 Log in to view price
7/8" 0.219" 10 Log in to view price
1" 0.25" 10 Log in to view price
#2 0.02" 100 Log in to view price
#4 0.03" 100 Log in to view price
18-8 Stainless Steel Lock Washers
18-8 Stainless Steel Lock Washers
These 18-8 stainless steel washers prevent loosening in moist or corrosive settings. Perfect for pairing with stainless fasteners to maintain consistent clamp load under vibration. A reliable option for industries that demand both durability and rust resistance.
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2.1 mm 4.4 mm 100 Log in to view price
3.1 mm 6.2 mm 100 Log in to view price
4.1 mm 7.6 mm 100 Log in to view price
5.1 mm 9.2 mm 100 Log in to view price
6.1 mm 11.8 mm 50 Log in to view price
8.1 mm 14.8 mm 50 Log in to view price
10.2 mm 18.1 mm 25 Log in to view price
12.2 mm 21.1 mm 25 Log in to view price
14.2 mm 24.1 mm 10 Log in to view price
16.2 mm 27.4 mm 10 Log in to view price
20.5 mm 33.6 mm 10 Log in to view price
24.5 mm 40 mm 10 Log in to view price
316 Stainless Steel Split Lock Washers
316 Stainless Steel Split Lock Washers
Fabricated from premium 316 stainless steel, these lock washers deliver exceptional corrosion resistance, even in harsh marine or chemical settings. They’re laser-stamped “316” for easy identification and ensure secure clamping in challenging environments.
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3/4" 0.188" 15 Log in to view price
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#6 0.031" 100 Log in to view price
#8 0.04" 100 Log in to view price
#10 0.047" 100 Log in to view price
Metric 316 Stainless Steel Lock Washers
Metric 316 Stainless Steel Lock Washers
Corrosion-resistant 316 stainless steel lock washers for metric fastener applications. Withstand harsh maritime or chemical environments while maintaining secure tension. An excellent choice for reliability and durability where standard stainless steels may fail.
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6.1 mm 11.8 mm 50 Log in to view price
8.1 mm 14.8 mm 50 Log in to view price
10.2 mm 18.1 mm 25 Log in to view price
12.2 mm 21.1 mm 25 Log in to view price
Silicon Bronze Split Lock Washers
Silicon Bronze Split Lock Washers
Non-magnetic, corrosion-resistant washers made from 651 silicon bronze. Ideal for maritime, electrical, and chemical environments, they provide superior conductivity and withstand corrosive elements like sea water or sewage. Perfect for marine and utility applications.
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#4 0.025" 100 Log in to view price
#6 0.031" 100 Log in to view price
#8 0.04" 100 Log in to view price
#10 0.047" 100 Log in to view price
Split Lock Washers #8
Split Lock Washers #8
Plain-finish carbon steel design sized for #8 fasteners. Ideal for moderate vibration environments, they’re suitable for Grade 5 bolt assemblies and general-purpose usage in various maintenance and repair operations.
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