3 mm Wrenches | McMaster-Carr

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System of Measurement

Drive Style

Drilled Spanner

External Square

Hex with Pilot Recess

Tamper-Resistant Hex

Tamper-Resistant Torx

Drive Size

Tip Style

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Driver Style

Number of Pieces

Overall Length

1 1/4" to 1 3/8"

1 5/16" to 4 3/4"

1 5/16" to 6 13/16"

1 1/2" to 1 3/4"

1 1/2" to 1 7/8"

Container Type

Compartmented Plastic Box

Metal Clip Rail

Plastic Clip Rail

Plastic Roll-Up Pouch

Grip Style

Finish

Phosphate Coated

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Nitride (TiN) Coated

Material

Beryllium Copper

Stainless Steel

Color

Relative Length

Wrench Opening Shape

Wrench Style

Square Drive Size

Driver Type

Performance

Corrosion Resistant

Drop Prevention

Electrically Insulating

Static Dissipative

Tight Clearance

Shank Type

Knurled-End Hex

Quick-Change Hex

Socket Shape

Handle Material

RoHS

REACH

DFARS Specialty Metals

Export Control Classification Number (ECCN)

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277 Products

Fastening and Joining

L-Keys

Turn fasteners from either end and reach into tight spots

Screwdrivers

Tighten and loosen screws

T-Handle Keys

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

Screwdriver Bits

Screwdriver Bits

Pair with drivers to turn screws

Driver Shafts

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

Torque Screwdrivers

Torque Screwdrivers

Apply precise torque as you fasten screws to prevent overtightening

Impact Drivers

More powerful than drills to drive screws through dense material and loosen stuck fasteners

Open-End Wrenches

Open-End Wrenches

Tighten and loosen fasteners from the top or the side

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

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