Maintenance Length Drill Bits

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Super Primalloy® Maintenance Length Drill Bits
Super Primalloy® Maintenance Length Drill Bits
Shortened by 15% for rigidity, these bits feature a heavy‑duty 135° split point that skips center punching. Premium M series alloy plus an expanded web boosts wear resistance, while flats on the shank prevent slippage. The ferro‑gold and black oxide finish helps dissipate heat. Ideal for everyday MRO tasks demanding quick starts and a reliable, long‑lasting drill.
Diameter Overall Length Material Finish Package Qty Item #
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1/16" 1-7/8" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
1/16" 1-7/8" M Series Alloy Black Oxide, Ferro Gold 3 Log in to view price
1/16" 1-7/8" M Series Alloy Black Oxide, Ferro Gold 12 Log in to view price
5/64" 2" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
5/64" 2" M Series Alloy Black Oxide, Ferro Gold 3 Log in to view price
3/32" 2-1/4" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
3/32" 2-1/4" M Series Alloy Black Oxide, Ferro Gold 3 Log in to view price
7/64" 2-3/8" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
7/64" 2-3/8" M Series Alloy Black Oxide, Ferro Gold 3 Log in to view price
1/8" 2-1/2" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
1/8" 2-1/2" M Series Alloy Black Oxide, Ferro Gold 3 Log in to view price
1/8" 2-1/2" M Series Alloy Black Oxide, Ferro Gold 12 Log in to view price
Super Primalloy® Edge Maintenance Length Drill Bits
Super Primalloy® Edge Maintenance Length Drill Bits
nACo nanocomposite coating helps these bits endure temperatures over 2000 °F, extending tool life by up to 40% compared to uncoated options. Maintenance length prevents flexing in tight areas, while three flats on the shank stop slippage. Crafted from premium M series alloy, they cut faster with less friction—ideal for high‑temperature drilling in demanding MRO tasks.
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1/16" 1-7/8" M Series Alloy nACo Nanocomposite coating 1 Log in to view price
5/64" 2" M Series Alloy nACo Nanocomposite coating 1 Log in to view price
3/32" 2-1/4" M Series Alloy nACo Nanocomposite coating 1 Log in to view price
7/64" 2-3/8" M Series Alloy nACo Nanocomposite coating 1 Log in to view price
1/8" 2-1/2" M Series Alloy nACo Nanocomposite coating 1 Log in to view price
9/64" 2-5/8" M Series Alloy nACo Nanocomposite coating 1 Log in to view price
5/32" 2-3/4" M Series Alloy nACo Nanocomposite coating 1 Log in to view price
11/64" 2-7/8" M Series Alloy nACo Nanocomposite coating 1 Log in to view price
3/16" 3" M Series Alloy nACo Nanocomposite coating 1 Log in to view price
13/64" 3-1/8" M Series Alloy nACo Nanocomposite coating 1 Log in to view price
7/32" 3-1/4" M Series Alloy nACo Nanocomposite coating 1 Log in to view price
15/64" 3-3/8" M Series Alloy nACo Nanocomposite coating 1 Log in to view price
Super Primalloy® Cryo-Gen N™ Maintenance Length Drill Bits
Super Primalloy® Cryo-Gen N™ Maintenance Length Drill Bits
Enhanced by a multi‑phase cryogenic treatment down to ‑300 °F, these bits refine grain structure for less brittleness. The “N” series nitride hardening boosts edge retention, and a 135° split point eliminates the need for center punching. Maintenance length adds rigidity in tight spaces. Ideal for high‑tensile steels, they’re built with tough M series alloy.
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1/16" 1-7/8" M Series Alloy Ferro Gold 1 Log in to view price
1/16" 1-7/8" M Series Alloy Ferro Gold 3 Log in to view price
5/64" 2" M Series Alloy Ferro Gold 1 Log in to view price
5/64" 2" M Series Alloy Ferro Gold 3 Log in to view price
3/32" 2-1/4" M Series Alloy Ferro Gold 1 Log in to view price
3/32" 2-1/4" M Series Alloy Ferro Gold 3 Log in to view price
7/64" 2-3/8" M Series Alloy Ferro Gold 1 Log in to view price
7/64" 2-3/8" M Series Alloy Ferro Gold 3 Log in to view price
1/8" 2-1/2" M Series Alloy Ferro Gold 1 Log in to view price
1/8" 2-1/2" M Series Alloy Ferro Gold 3 Log in to view price
9/64" 2-5/8" M Series Alloy Ferro Gold 1 Log in to view price
9/64" 2-5/8" M Series Alloy Ferro Gold 3 Log in to view price
Super Primalloy® Ultra Step Maintenance Length Drill Bits
Super Primalloy® Ultra Step Maintenance Length Drill Bits
With a micro‑center stepped drill point, these bits eliminate center punching or pilot holes. The stepped tip stays cooler for longer tool life and provides clean, burr‑free cuts—even in sheet metal. Maintenance length offers greater rigidity, and flats on the shank reduce chuck slippage. Crafted from premium M series alloy, they excel in industrial or automotive repairs.
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1/16" 1-7/8" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
1/16" 1-7/8" M Series Alloy Black Oxide, Ferro Gold 3 Log in to view price
5/64" 2" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
5/64" 2" M Series Alloy Black Oxide, Ferro Gold 3 Log in to view price
3/32" 2-1/4" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
3/32" 2-1/4" M Series Alloy Black Oxide, Ferro Gold 3 Log in to view price
7/64" 2-3/8" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
7/64" 2-3/8" M Series Alloy Black Oxide, Ferro Gold 3 Log in to view price
1/8" 2-1/2" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
1/8" 2-1/2" M Series Alloy Black Oxide, Ferro Gold 3 Log in to view price
9/64" 2-5/8" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
9/64" 2-5/8" M Series Alloy Black Oxide, Ferro Gold 3 Log in to view price
Super Primalloy® Maintenance Length S&D Drill Bits
Super Primalloy® Maintenance Length S&D Drill Bits
Designed at a 5" overall length for added rigidity, these S&D drill bits feature a 135° split point to reduce walking. Nitro‑carburized cutting edges resist heat and dulling, while premium M series alloy construction extends tool life. Three flats on the shank eliminate chuck slip. Excellent for maintenance where quick penetration and reliable performance are critical.
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17/32" 5" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
9/16" 5" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
19/32" 5" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
5/8" 5" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
21/32" 5" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
11/16" 5" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
23/32" 5" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
3/4" 5" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
25/32" 5" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
13/16" 5" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
27/32" 5" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
7/8" 5" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
Super Primalloy® Maintenance Length Left Hand Drill Bits
Super Primalloy® Maintenance Length Left Hand Drill Bits
Perfect for extracting broken fasteners, these left‑hand bits often back out screws as they drill. A 135° split point makes starting holes easier, while the shorter maintenance length boosts rigidity. M series alloy steel plus an expanded web provides extra durability. The ferro‑gold finish reduces friction and heat, helping them perform flawlessly in tough MRO settings.
Diameter Overall Length Flute Length Material Finish Package Qty Item #
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1/16" 1-7/8" 7/8" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
3/32" 2-1/4" 1-1/4" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
1/8" 2-1/4" 1-7/16" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
5/32" 2-3/4" 1-11/16" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
3/16" 3" 1-7/8" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
7/32" 3-1/4" 2" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
1/4" 3-1/2" 2" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
9/32" 3-3/4" 2-1/4" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
5/16" 4" 2-1/2" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
11/32" 4-1/8" 2-5/8" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
3/8" 4-1/4" 11/16" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
13/32" 4-3/8" 2-13/16" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
Super Primalloy® Cryo-Gen N™ Maintenance Length Left Hand Drill Bits
Super Primalloy® Cryo-Gen N™ Maintenance Length Left Hand Drill Bits
Featuring left‑hand rotation, these cryogenically treated bits help remove broken fasteners without extractors. The “N” series nitride treatment further strengthens cutting edges, and a 135° split point streamlines starts. Shortened overall length increases rigidity, while M series alloy steel offers superb durability. Ideal for challenging MRO environments or tight work areas.
Diameter Overall Length Flute Length Material Finish Package Qty Item #
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1/16" 1-7/8" 7/8" M Series Alloy Gold 1 Log in to view price
3/32" 2-1/4" 1-1/4" M Series Alloy Gold 1 Log in to view price
1/8" 2-1/2" 1-7/16" M Series Alloy Gold 1 Log in to view price
5/32" 2-3/4" 1-11/16" M Series Alloy Gold 1 Log in to view price
3/16" 3" 1-7/8" M Series Alloy Gold 1 Log in to view price
7/32" 3-1/4" 2" M Series Alloy Gold 1 Log in to view price
1/4" 3-1/2" 2" M Series Alloy Gold 1 Log in to view price
9/32" 3-3/4" 2-1/4" M Series Alloy Gold 1 Log in to view price
5/16" 4" 2-1/2" M Series Alloy Gold 1 Log in to view price
11/32" 4-1/8" 2-5/8" M Series Alloy Gold 1 Log in to view price
3/8" 4-1/4" 2-11/16" M Series Alloy Gold 1 Log in to view price
13/32" 4-3/8" 2-13/16" M Series Alloy Gold 1 Log in to view price
Super Primalloy® Ultra Step Maintenance Length Left Hand Drill Bits
Super Primalloy® Ultra Step Maintenance Length Left Hand Drill Bits
Engineered for broken fastener removal, these left‑hand maintenance length bits use a micro‑center stepped point for easier starts. The reverse rotation often backs out seized screws, while the shorter design increases rigidity. Premium M series alloy reduces heat buildup and keeps edges sharper longer. Ideal for MRO work in automotive or industrial settings.
Diameter Overall Length Flute Length Material Finish Package Qty Item #
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1/8" 2-1/2" 1-7/16" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
3/16" 3" 1-7/8" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
1/4" 3-1/2" 2" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
5/16" 4" 2-1/2" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
3/8" 4-1/4" 2-11/16" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
Super Primalloy® Cryo-Gen N™ Maintenance Length Wire Drill Bits
Super Primalloy® Cryo-Gen N™ Maintenance Length Wire Drill Bits
For precise wire‑size holes, these Cryo‑Gen N™ bits use a ‑300 °F cryogenic process to reduce brittleness. An “N” series nitride finish boosts edge retention, while a 135° split point speeds starts in high‑tensile metals. The shorter length resists breakage, and flats on the shank prevent slipping. Constructed from M series alloy, they’re ideal for tight spaces and fine detail work.
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Wire Gauge No. 1 3-7/8" 2-5/8" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
Wire Gauge No. 2 3-7/8" 2-5/8" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
Wire Gauge No. 3 3-3/4" 2-1/2" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
Wire Gauge No. 4 3-3/4" 2-1/2" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
Wire Gauge No. 5 3-3/4" 2-1/2" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
Wire Gauge No. 6 3-3/4" 2-1/2" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
Wire Gauge No. 7 3-5/8" 2-7/16" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
Wire Gauge No. 8 3-5/8" 2-7/16" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
Wire Gauge No. 9 3-5/8" 2-7/16" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
Wire Gauge No. 10 3-5/8" 2-7/16" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
Wire Gauge No. 11 3-1/2" 2-5/16" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price
Wire Gauge No. 12 3-1/2" 2-5/16" M Series Alloy Black Oxide, Ferro Gold 1 Log in to view price

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