1 3/8" Hex Drivers | McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

	Size Size	Show

1 3/8"

	Size Size	Hide

	Square Drive Size Square Drive Size

3/8"

1/2"

3/4"

	For Drive Style For Drive Style


Hex	External Hex

External 12- Point	External Square

	Socket Style Socket Style


Bit	Standard

Offset

	Overall Length Overall Length

	Bolt Clearance Style Bolt Clearance Style


Standard	Deep

	Individual/Set Individual/Set

Individual

Set

	Opening Shape Opening Shape


Rounded	12-Point

V	12-Point Secure Grip

	Socket Shape Socket Shape

	6- Point		12- Point

	Tip Style Tip Style

	Standard

	Socket Type Socket Type

	Socket

	Wrench Style Wrench Style


Open End	Box

	Finish Finish

Black Oxide

Chrome Plated

Powder Coated

	Material Material

Steel

	Drive Type Drive Type

Manual

Impact

	Number of Pieces Number of Pieces

	Head Style Head Style


Standard	Offset

	Container Type Container Type

Plastic Roll-Up Pouch

	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

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

REACH Compliant

	Opening Angle Opening Angle

15°

30°

Straight

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42 Products

6-Point Sockets

Standard

Deep

Achieve the best possible grip on hex fasteners and prevent rounding.

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

			Standard			Deep
Size	Material	Specifications Met	Overall Lg.		Each	Overall Lg.		Each
1/2" Square Drive
1 3/8"	Chrome-Plated Steel	ASME B107.110	2"	00000000	000000	__	000000	00
1 3/8"	Chrome-Plated Steel	ASME B107.110, SAE AS954G	__	000000	00	3 1/2"	00000000	000000
3/4" Square Drive
1 3/8"	Chrome-Plated Steel	ASME B107.110	__	000000	00	3 1/2"	0000000	00000

12-Point Sockets

Standard

Deep

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			Deep
Size	Material	Overall Lg.		Each	Overall Lg.		Each
Chrome Plated
1/2" Square Drive
1 3/8"	Steel	2"	0000000	000000	3 1/2"	00000000	000000
3/4" Square Drive
1 3/8"	Steel	2 1/4"	0000000	00000	__	000000	00
1" Square Drive
1 3/8"	Steel	2 7/16"	0000000	00000	__	000000	00
Black Oxide
1/2" Square Drive
1 3/8"	Steel	2"	0000000	00000	__	000000	00

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.

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

3/8" Square Drive
Size	Overall Lg.	Thick.	Center-to-Center Lg.	Material		Each
1 3/8"	2 3/8"	3/8"	1 5/16"	Chrome-Plated Steel	0000000	000000
1/2" Square Drive
1 3/8"	3"	7/16"	2"	Chrome-Plated Steel	0000000	00000

Secure-Grip Tight-Clearance Offset Sockets

12-Point Secure Grip

The opening makes more contact with fasteners for a better grip than standard open-end sockets. Also known as flare-nut or line wrench sockets, they're often used with flared tube fittings and fuel and hydraulic lines.

12-point secure-grip sockets quickly position on hex fasteners.

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

12-Point Secure Grip
Size	Overall Lg.	Thick.	Center-to-Center Lg.	Material		Each
1/2" Square Drive
1 3/8"	2 5/8"	31/32"	1 5/16"	Chrome-Plated Steel	0000000	000000

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
1/2" Square Drive
1 3/8"	7/8"	1 3/8"	__	Steel	Black Oxide	2"	0000000	000000	000000	00
3/4" Square Drive
1 3/8"	7/8"	1 9/32"	1 7/16"	Steel	Black Oxide	2 1/4"	0000000	00000	0000000	00000
1" Square Drive
1 3/8"	25/32"	1 1/2"	2"	Steel	Black Oxide	2 11/16"	00000000	00000	00000000	0000

Deep

Sockets
	Clearance Depth								Retaining Rings
Size	Nut	Bolt	Compatible Retaining Ring ID	Material	Finish	Overall Lg.		Each		Each
1/2" Square Drive
1 3/8"	29/32"	2 7/8"	__	Steel	Black Oxide	3 1/2"	00000000	000000	000000	00
3/4" Square Drive
1 3/8"	7/8"	2 9/32"	1 7/16"	Steel	Black Oxide	3 1/4"	0000000	00000	0000000	00000
1" Square Drive
1 3/8"	2 1/8"	2 27/32"	2"	Steel	Black Oxide	4"	00000000	00000	00000000	0000

12-Point Impact Sockets

The 12-point shape quickly positions on hex fasteners. These sockets are made to withstand the high torque and force of impact tools.

3/4" 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
1/2" Square Drive
1 3/8"	13/16"	1 3/32"	__	Steel	Black Oxide	2 1/8"	00000000	000000	000000	00
3/4" Square Drive
1 3/8"	1 1/8"	1 1/8"	1 5/8"	Steel	Black Oxide	2 1/4"	00000000	00000	0000000	00000

Deep

	Clearance Depth				Sockets
Size	Nut	Bolt	Material	Finish	Overall Lg.		Each
1/2" Square Drive
1 3/8"	1 7/64"	2 7/8"	Steel	Black Oxide	3 1/2"	00000000	000000

Premium 6-Point Socket Sets

Made in the U.S.A., these tools handle the toughest industrial applications, provide the best grip on fasteners, and have a superior finish. The hex shape grips hex fasteners and prevents rounding.

Sockets—Chrome-Plated Steel

3/4" Square Drive
No. of Pieces	Includes		Each
11	Deep Sockets: 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2", 1 5/8"	0000000	0000000

Value 12-Point Socket Sets

For high quality at a lower price, choose these U.S.A.-made sets. The 12-point shape quickly positions on hex fasteners.

Sockets with Drive Tools—Chrome-Plated Steel

3/4" Square Drive
No. of Pieces	Components Included	Includes		Each
13	11 Sockets 1 Drive Tool 1 Extension	Standard Sockets: 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 3/16", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2", 1 9/16", 1 5/8" 20" Long Ratchet Wrench 8" Long Extension	0000000	0000000

Premium 12-Point Socket Sets

Made in the U.S.A., these tools handle the toughest industrial applications, provide the best grip on fasteners, and have a superior finish. The 12-point shape quickly positions on hex fasteners.

Sockets with Drive Tools—Chrome-Plated Steel

3/4" Square Drive
No. of Pieces	Components Included	Includes		Each
22	16 Sockets 2 Drive Tools 3 Extensions 1 Adapter	Standard Sockets: 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2", 1 5/8", 1 11/16", 1 3/4", 1 13/16", 1 7/8", 2" 20 1/8" Long Ratchet Wrench 22 1/8" Long Flex-Head Wrench Handle 3" Long Extension 8" Long Extension 16" Long Extension 4 1/16" Square Drive Adapter	0000000	0000000
29	22 Sockets 3 Drive Tools 3 Extensions 1 Adapter	Standard Sockets: 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 3/16", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2", 1 9/16", 1 5/8, 1 11/16", 1 3/4", 1 13/16", 1 7/8", 2", 2 1/8", 2 3/16", 2 1/4", 2 3/8" 20 1/8" Long Ratchet Wrench 19" Long Sliding-Head Wrench Handle 22 1/8" Long Flex-Head Wrench Handle 3" Long Extension 8" Long Extension 16" Long Extension 4 1/16" Long Flex Adapter	0000000	00000000

Foam Socket Organizer for 22 Piece 3/4" Square Drive Size Set

0000000

Each

0000000

Secure-Grip Tight-Clearance Offset Socket Sets

12-Point Secure Grip

12-point secure-grip sockets quickly position on hex fasteners.

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

1/2" Square Drive
Opening Shape	No. of Pieces	Includes	Material		Each
12-Point Secure Grip	8	Offset Sockets: 1 1/8", 1 1/4", 1 5/16", 1 3/8", 1 1/2", 1 5/8", 1 3/4", 2"	Chrome-Plated Steel	0000000	0000000

Impact Hex Bit Socket Sets

Plastic Case

Use these sockets as an alternative to a screwdriver or L-key. They are made to withstand the high torque and force of impact tools.

1" Square Drive—Black-Oxide Steel
No. of Pieces	Includes	Overall Lg.	Container Type		Each
6	Bit Sockets: 3/4", 7/8", 1", 1 1/8", 1 1/4", 1 3/8", (4" O'all Lg.)	4"	Plastic Case	0000000	0000000

6-Point Impact Socket Sets

Sockets with Extension

The hex shape grips hex fasteners and prevents rounding. These sockets are made to withstand the high torque and force of impact tools.

3/4" Square Drive—Steel
No. of Pieces	Components Included	Includes	Finish		Each
13	12 Sockets 1 Extension	Standard Sockets: 3/4", 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2", 1 5/8" 7" Long Extension	Black Oxide	0000000	0000000

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
1 3/8"	12"	15°	19/32"	Steel	Black Oxide	ASME B107	0000000	000000

Tight-Clearance Open-End Wrenches

Fit the narrow head into tight spaces and around thin fasteners.

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

						Dull Chrome Plated		Black Oxide
Size	Overall Lg.	Opening Angle	Head Thick.	Material	Specifications Met		Each		Each
1 3/8"	7 3/4"	30°	9/32"	Steel	ASME B107	0000000	000000	0000000	000000

Multi-Size Open-End Wrenches

Also known as alligator wrenches and water-meter nut wrenches, the V-shaped head fits multiple hex fastener sizes.

Size	Overall Lg.	Opening Angle	Head Thick.	Jaw Finish	Material	Color	Grip Material		Each
3/4"–2"	21"	Straight	11/16"	Zinc Plated	Powder-Coated Steel	Red	Plastic	0000000	0000000

Tight-Clearance Open-End Wrench Sets

Fit the narrow head into tight spaces and around thin fasteners.

Inch Wrench Sets
Sizes Included	Overall Lg.	Opening Angle	Material	Finish	Appearance	Container Type	Specifications Met		Each
11-Piece Sets
3/4" 13/16" 7/8" 15/16" 1" 1 1/16" 1 1/8" 1 3/16" 1 1/4" 1 3/8" 1 1/2"	6 5/16"-7 11/16"	30°	Steel	Black Oxide	__	Plastic Roll-Up Pouch	ASME B107	0000000	0000000
3/4" 13/16" 7/8" 15/16" 1" 1 1/16" 1 1/8" 1 3/16" 1 1/4" 1 3/8" 1 1/2"	6 3/8"-7 3/4"	30°	Steel	Chrome Plated	Dull	Plastic Roll-Up Pouch	ASME B107	0000000	000000

Ratcheting Box Wrenches

12-Point Opening

A ratchet mechanism allows you to turn fasteners in tight spaces without removing and repositioning the wrench. The smaller the turn required to ratchet, the less clearance you need to engage the ratchet.

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

12-Point Opening
Size	Overall Lg.	Head OD	Head Thick.	Turn Required to Ratchet	Finish	Appearance	Grip Material	Specifications Met		Each
Steel
1 3/8"	15 1/2"	2 3/4"	5/8"	20°	Chrome Plated	Polished	Plastic	Fed. Spec. GGG-W-001405	0000000	0000000

Deep-Offset High-Leverage Box Wrenches

A 45° offset head provides clearance for reaching over obstructions. These wrenches have a long handle for extra leverage—add an extension to increase it even more.

Extension handles (sold separately) fit securely over the end of the wrench.

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

Wrenches									Extension Handles
Size	Overall Lg.	Overall Lg. with Optional Extension Handle	Head Thick.	Head Offset Angle	Material	Finish		Each		Each
12-Point Opening
1 3/8", 35 mm	10 3/4"	32 5/8"	7/8"	45°	Steel	Black Oxide	00000000	000000	00000000	000000

Striking Box Wrenches

12-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.

12-Point Opening
Size	Overall Lg.	Head Thick.	Material	Finish	Specifications Met		Each
1 3/8"	10 5/8"	7/8"	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.

12-Point Opening
Size	Overall Lg.	Head Thick.	Head Offset Angle	Material	Finish	Specifications Met		Each
1 3/8"	11 1/2"	15/16"	45°	Steel	Black Oxide	ASME B107	0000000	000000