Square-Head Wrenches | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Size Size

	For Drive Style For Drive Style

	Wrench Style Wrench Style


Open End	Socket

Box	Square Drive

	Square Drive Size Square Drive Size

	Individual/Set Individual/Set

Individual

Set

	Overall Length Overall Length

	Head Style Head Style


Standard	Offset

	Socket Shape Socket Shape

	Material Material

Steel

Iron

Aluminum

	Socket Style Socket Style


Standard	Bit

Offset

	Finish Finish

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Head Thickness Head Thickness

	Number of Heads Number of Heads

	Wrench Opening Shape Wrench Opening Shape

4-Point

Rounded

Hex

	Bolt Clearance Style Bolt Clearance Style


Standard	Extra Deep

Deep

	Wrench Type Wrench Type

Standard

Torque

	Drive Type Drive Type

Manual

Impact

	Opening Angle Opening Angle

585 Products

Square Drive Sockets and Ratchet Wrenches

4-Point Sockets

Also known as pipe plug sockets, these sockets have a square shape that provides the best possible grip on square fasteners and prevents rounding.

8-Point Sockets

Quickly position these sockets on square and external 8-point fasteners.

Spanner Sockets

For easy tightening and loosening, these sockets have pins that grip the slotted sides on bearing nuts.

Square Bit Sockets

These sockets are also known as Robertson bits.

Tight-Clearance Offset Sockets

Often used with an extension, these sockets turn fasteners and fittings in obstructed areas that a regular socket can't reach. They are also known as crowfoot wrenches.

4-Point Impact Sockets

The square shape provides the best possible grip on square fasteners and prevents rounding.

8-Point Impact Sockets

Quickly position these sockets on square fasteners.

Extra-Deep 8-Point Impact Sockets

Extra length allows access to fasteners on long bolts.

8-Point Socket Sets

Quickly position these sockets on square fasteners.

Wheel Bearing Locknut Socket Sets

Shaped and sized for compatibility with wheel bearing locknuts on trucks and trailers, the sockets in these sets make it easy to install and remove locknuts.

Tight-Clearance Offset Socket Sets

Often used with an extension, these sockets turn fasteners and fittings in obstructed areas that a regular socket can't reach. They are also known as crowfoot wrenches.