Allen Bits | McMaster-Carr

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Drive Style

Hex with Pilot Recess

Tamper-Resistant Torx

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Hex Shank Size

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Compartmented Metal Box

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Magnesium Phosphate Coated

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Titanium Aluminum Nitride (TiAlN) Coated

Titanium Nitride (TiN) Coated

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For Bit Shank Type

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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EAR99

DFARS Specialty Metals

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4,886 Products

Fastening and Joining

Screwdriver Bits

Pair with drivers to turn screws

261 products

Nutdriver Bits

Pair with nutdrivers to turn hex nuts and cap screws

93 products

Torque Screwdrivers

Apply precise torque as you fasten screws to prevent overtightening

14 products

Driver Shafts

Attach to a handle to create your own driver tool, or pair with socket wrenches and power tools

59 products

Screwdrivers

Tighten and loosen screws

38 products

L-Keys

Turn fasteners from either end and reach into tight spots

1,220 products

T-Handle Keys

To turn fasteners in hard-to-reach spots, there's a long shaft and a grip for your whole hand

422 products

Bit Adapters

Connect a variety of bits to drills, powered screwdrivers, ratchet wrenches, and other turning tools

3 products

L-Key Handles

Comfort with every turn—these upgrade your L-keys into T-handle keys

1 product

Driver Extension Adapters

Create a tool that’s as long as you need to reach deeply recessed fasteners

44 products

Bit Sockets

Turn fasteners with an internal drive style without slipping and damaging the drive

766 products

Socket Bits

Switch out worn or damaged bits instead of replacing your entire bit socket

37 products

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

1,818 products

Wrench Heads

Attach to your ratchet wrench and socket extension to turn fasteners where clearance is limited

135 products

Fabricating and Machining

Hole Saw Arbors

Secure a hole saw to a drill or drill press

11 products

Containers, Storage, and Furniture

Hex Key Organizers

Store L-keys and T-handle keys according to size

12 products