Metric Allen Hex Bits | McMaster-Carr

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Drive Style

Drilled Spanner

External 12-Point

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Knurled-End Hex

Quick-Change Hex

Overall Length

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Driver Style

Hex Shank Size

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Material

Aluminum Bronze

Carbide-Tipped Steel

Cubic Boron Nitride

Stainless Steel

Tungsten Carbide

Socket Style

Number of Pieces

Socket Shape

For Bit Shank Type

Quick-Change Hex

Finish

Aluminum Chromium Nitride (AlCrN) Coated

Aluminum Titanium Nitride (AlTiN) Coated

Chromium Carbide (CrC) Coated

Diamondlike Carbon (DLC) Coated

Magnesium Phosphate Coated

Phosphate Coated

Container Type

Compartmented Metal Box

Compartmented Plastic Box

Fabric Roll-Up Pouch

Metal Clip Rail

Plastic Clip Rail

For Use On

Stainless Steel

Screw Size

Drill Bit Size

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Unit of Measure

Thread Type

Metric Trapezoidal

How can we improve?

8,779 Products

Fastening and Joining

Screwdriver Bits

Screwdriver Bits

Pair with drivers to turn screws

Nutdriver Bits

Pair with nutdrivers to turn hex nuts and cap screws

Screwdrivers

Tighten and loosen screws

Driver Shafts

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

L-Keys

Turn fasteners from either end and reach into tight spots

Screwdriver/Nutdrivers

Screwdriver/Nutdrivers

Quickly switch between driving screws and driving nuts

T-Handle Keys

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

Bit Adapters

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

Bit Sockets

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

Sockets

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

Socket Bits

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

Wrench Heads

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

Socket Adapters

Socket Adapters

Make your socket more versatile, from converting the drive to limiting torque

Screw, Pipe, and Stud Extractors

Screw, Pipe, and Stud Extractors

Remove broken screws, pipes, and studs without damaging the threads around them

Fabricating and Machining

Drill Bits

Create holes in metal, wood, plastic, concrete, and more

Hollow-Core Cutters

Hollow-Core Cutters

Use in magnetic-base drills to form burr-free holes by only cutting the outside edge of a hole

Drill Taps

Drill and thread holes with the same bit

Reamer Drill Bits

Reamer Drill Bits

Drill and finish holes in one pass

Drill Stops

Limit how far bits can drill to create identical hole depths every time

Drill Bit Guides

Drill Bit Guides

Drill precise holes without building a fixture

Friction Drill Bits

Friction Drill Bits

Pair with friction drills to melt holes that have an outer lip in sheet metal

Tap, Die, and Drill Bit Sets

Tap, Die, and Drill Bit Sets

Cut and repair internal and external threads and drill holes in many different sizes

Tap, Die, and Thread File Sets

Tap, Die, and Thread File Sets

Repair internal and external threads in a range of sizes

Taps

Cut internal threads for fasteners, pipe, conduit, and more

Tap and Drill Bit Sets

Tap and Drill Bit Sets

Drill holes and cut internal threads in a variety of sizes

Tap and Die Sets

Tap and Die Sets

Cut and repair internal and external threads in many sizes

Thread Mills

Install in a CNC machine to cut a range of internal and external threads with a single tool

End Mills

Cut and shape material to create precise slots, grooves, and profiles

Hole Saws

Connect to a drill or drill press to make circular cuts

Slitting Saws

Pair with an arbor to cut narrow slots in workpieces

Reamers

Finish holes to an exact size, correct misaligned holes, and remove burrs

Electrical Discharge Machining Electrodes

Electrical Discharge Machining Electrodes

Create pilot holes and other small holes to run EDM wire through; use with hole-popping EDM machines

Electrical Discharge Machining Electrode Guides

Electrical Discharge Machining Electrode Guides

Hold EDM electrodes in place as they penetrate workpieces

Countersinks

Cut a cone-shaped opening in a hole to install flat-head screws and rivets flush with the surface

Router Bits

Attach to routers and CNC machines to cut grooves, chamfers, and other detailed shapes

Lathe Tools

Shape workpieces as they rotate on a lathe

Containers, Storage, and Furniture

Hex Key Organizers

Hex Key Organizers

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

Cabinets

Store objects on enclosed shelves

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)