1⁄2 Inch Sockets | McMaster-Carr

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System of Measurement

Drive Size

Square Drive Size

Bolt Clearance Type

Socket Shape

OD

Drive Style

External 12-Point

External Square

Socket Style

Overall Length

15/16" to 1 1/8"

1 1/2" to 2 1/4"

Sold As

Socket Type

Drive Type

Finish

Phosphate Coated

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Nitride (TiN) Coated

Zinc Flake Coated

Thread Size

4-40 to 5/16"-32

Number of Pieces

Material

Aluminum Bronze

Stainless Steel

Container Type

Fabric Roll-Up Pouch

Metal Clip Rail

Plastic Clip Rail

Tip Style

Specifications Met

Fastener Head Type

Head Style

Wrench Style

REACH

Export Control Classification Number (ECCN)

DFARS Specialty Metals

RoHS

Compliant with Exemptions

How can we improve?

568 Products

Fastening and Joining

Sockets

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

Bit Sockets

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

Wrench Heads

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

Socket Wrenches

Socket Wrenches

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

Box Wrenches

Grip all sides of a fastener to prevent slipping

Socket Bits

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

Torque Wrenches

Torque Wrenches

Avoid overtightening and damaging fasteners by applying a specific torque

Nut Starters

Begin turning nuts in hard-to-reach spots

Nutdrivers

Tighten and loosen nuts and bolts

Nutdriver Bits

Pair with nutdrivers to turn hex nuts and cap screws

Screwdriver Bits

Screwdriver Bits

Pair with drivers to turn screws

Socket Head Screws

Socket Head Screws

With a deeper drive than flat and rounded head screws, these withstand more torque for a tighter hold

Flat Head Screws

Flat Head Screws

Fit in countersunk holes for a flush finish

Shoulder Screws

Shoulder Screws

Rotate parts around the cylinder under the head to guide and align them during installation

Set Screws

Exert pressure at the tip to hold parts in place, unlike screws that hold material together with threads

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