3 1/8" Hex Drivers | McMaster-Carr

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	System of Measurement System of Measurement

Inch

	Size Size	Show

3 1/8"

	Size Size	Hide

	Square Drive Size Square Drive Size

1 1/2"

	Bolt Clearance Style Bolt Clearance Style


Standard	Deep

	Socket Shape Socket Shape

	6- Point		12- Point

	Head Style Head Style


Standard	Offset

	Overall Length Overall Length

	For Drive Style For Drive Style


External Hex	External 12-Point	External Square

	Wrench Style Wrench Style

	Open End
	Box

	Drive Type Drive Type

Manual

Impact

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

REACH Compliant

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

RoHS Compliant

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

DFARS Specialty Metals
COTS-Exempt

	Individual/Set Individual/Set

Individual

	Finish Finish

Black Oxide

Chrome Plated

	Material Material

Steel

	Socket Style Socket Style

	Standard

	OD OD

4 3/16"

4 11/32"

4 23/32"

	Socket Type Socket Type

	Socket

	For Use With For Use With

Screws and Nuts

	Head Thickness Head Thickness

1 1/2"

1 5/8"

1 7/8"

	Number of Heads Number of Heads

	Ratcheting or Nonratcheting Ratcheting or Nonratcheting

Nonratcheting

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10 Products

12-Point Sockets

Standard

The 12-point shape quickly positions on hex fasteners. These sockets are for hand-driven use only.

For technical drawings and 3-D models, click on a part number.

		Standard
Size	Material	Overall Lg.		Each
Chrome Plated
1" Square Drive
3 1/8"	Steel	4 3/16"	0000000	0000000

6-Point Impact Sockets

Achieve the best possible grip on hex fasteners and prevent rounding. These sockets are made to withstand the high torque and force of impact tools.

3/4", 1", and 1 1/2" square drive size sockets require a locking retainer. Use with an impact wrench that has a pin-style socket retainer, or use a socket retaining ring with tools that have a hole- or hole-and-ring style socket retainer.

For technical drawings and 3-D models, click on a part number.

Standard

Sockets
	Clearance Depth								Retaining Rings
Size	Nut	Bolt	Compatible Retaining Ring ID	Material	Finish	Overall Lg.		Each		Each
1" Square Drive
3 1/8"	1 15/16"	2 51/64"	2 1/2"	Steel	Black Oxide	3 15/16"	0000000	0000000	00000000	00000
1 1/2" Square Drive
3 1/8"	2"	3"	3 3/8"	Steel	Black Oxide	4 3/4"	0000000	000000	00000000	0000

Deep

Sockets
	Clearance Depth								Retaining Rings
Size	Nut	Bolt	Compatible Retaining Ring ID	Material	Finish	Overall Lg.		Each		Each
1" Square Drive
3 1/8"	1 15/16"	4 3/32"	2 1/2"	Steel	Black Oxide	5 1/2"	00000000	0000000	00000000	00000

Open-End Wrenches

For technical drawings and 3-D models, click on a part number.

Size	Overall Lg.	Opening Angle	Head Thick.	Material	Finish	Specifications Met		Each
3 1/8"	30"	15°	1 1/2"	Steel	Black Oxide	ASME B107	0000000	0000000

Striking Box Wrenches

12-Point Opening

6-Point Opening

Also known as slugging wrenches, strike the handle with a hammer to break stuck fasteners free. Wrenches with a 12-point opening are easier to position on hex fasteners than wrenches with a 6-point opening but make less contact.

For technical drawings and 3-D models, click on a part number.

Size	Overall Lg.	Head Thick.	Material	Finish	Specifications Met		Each
3 1/8"	13 13/16"	1 5/8"	Steel	Black Oxide	ASME B107	0000000	0000000
3 1/8"	14"	1 5/8"	Steel	Black Oxide	ASME B107	0000000	000000

Deep-Offset Striking Box Wrenches

The head is offset 45° to provide clearance for reaching over obstructions. Also known as slugging wrenches, strike the handle with a hammer to break stuck fasteners free.

Size	Overall Lg.	Head Thick.	Head Offset Angle	Material	Finish	Specifications Met		Each
3 1/8"	16"	1 7/8"	45°	Steel	Black Oxide	ASME B107	0000000	0000000