12 mm Wrenches | McMaster-Carr

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System of Measurement

Wrench Style

Drive Size

Wrench Opening Shape

12-Point Sure Grip

Number of Pieces

Head Style

Sold As

Ratcheting

Drive Style

External 12-Point

External Spline

External Square

Hex with Pilot Recess

Tamper-Resistant Torx

Container Type

Fabric Roll-Up Pouch

Metal Clip Rail

Plastic Clip Rail

Plastic Organizer

Plastic Roll-Up Pouch

Overall Length

15/16" to 1 1/8"

1 5/16" to 6 13/16"

1 7/8" to 6 7/8"

Material

Aluminum Bronze

Stainless Steel

Finish

Magnesium Phosphate Coated

Phosphate Coated

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Nitride (TiN) Coated

Relative Length

Grade

Appearance

Wrench Type

Square Drive Size

Head Thickness

Length

15/16" to 1 1/8"

1 5/16" to 6 13/16"

1 7/8" to 6 7/8"

Number of Heads

Performance

Changeable Head

Corrosion Resistant

Reversible Ratcheting

Tight Clearance

RoHS

REACH

Export Control Classification Number (ECCN)

DFARS Specialty Metals

How can we improve?

231 Products

Fastening and Joining

Combination Wrenches

Combination Wrenches

Use the open end when tightening in cramped spaces and the box end when you need extra grip

Open-End Wrenches

Open-End Wrenches

Tighten and loosen fasteners from the top or the side

Wrench Heads

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

Sockets

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

Box Wrenches

Grip all sides of a fastener to prevent slipping

Bit Sockets

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

Socket Wrenches

Socket Wrenches

Apply torque to turn nuts, bolts, and other fasteners without rounding the heads

Torque Wrenches

Torque Wrenches

Avoid overtightening and damaging fasteners by applying a specific torque

Socket Bits

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

L-Keys

Turn fasteners from either end and reach into tight spots

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

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