1 3/8" Wrenches | McMaster-Carr

		Box End		Open End			Dull Chrome Plated		Polished Chrome Plated		Black
Size	Overall Lg.	Head Offset Angle	Head Thick.	Opening Angle	Head Thick.	Material		Each		Each		Each
12-Point Box Opening
1 3/8"	18 1/2"	15°	17/32"	15°	29/32"	Steel	000000	00	0000000	0000000	000000	00
1 3/8"	18 1/2"	15°	3/4"	15°	5/8"	Steel	000000	00	000000	00	0000000	000000
1 3/8"	18 1/2"	15°	25/32"	15°	35/64"	Steel	0000000	000000	000000	00	000000	00

Nonsparking Combination Wrenches

Made of materials that are Factory Mutual approved, these wrenches inhibit sparking and are nonmagnetic and corrosion resistant. They satisfy OSHA requirements that specify nonsparking tools for locations where flammable vapors and combustible residues are present.

Warning: Do not use these tools in direct contact with acetylene.

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

		Box End		Open End
Size	Overall Lg.	Head Offset Angle	Head Thick.	Opening Angle	Head Thick.	Material	Specifications Met		Each
12-Point Box Opening
1 3/8"	19"	15°	45/64"	15°	9/16"	Aluminum-Bronze	FM Approved	0000000	0000000

Ratcheting Combination Wrenches

A ratchet mechanism in the box end allows you to turn fasteners in tight spaces without removing and repositioning the wrench. Flip these wrenches over to ratchet in the opposite direction. The smaller the turn required to ratchet, the less clearance you need to engage the ratchet. Wrenches are polished for a mirror-like finish.

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

		Box End		Open End
Size	Overall Lg.	Head Thick.	Turn Required to Ratchet	Opening Angle	Head Thick.	Material	Appearance		Each
12-Point Box Opening
1 3/8"	18 1/4"	11/16"	5°	15°	35/64"	Chrome-Plated Steel	Polished	0000000	000000

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	ASME B107	0000000	000000

Two-Head Open-End Wrenches

Rounded Openings

Wrenches with square openings provide the best grip on square fasteners.

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

					Dull Chrome Plated		Black
Size	Overall Lg.	Opening Angle	Head Thick.	Material		Each		Each
Rounded Openings
1 3/8" × 1 7/16"	15 3/4"	15°	9/16" × 35/64"	Steel	0000000	000000	000000	00
1 3/8" × 1 7/16"	16"	15°	9/16" × 35/64"	Steel	000000	00	0000000	000000

60° Angle Open-End Wrenches

One head is angled 60° for access to hard-to-reach fasteners. These tools are also known as ignition wrenches.

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

						Dull Chrome Plated		Black
Size	Overall Lg.	Opening Angle	Head Thick.	Material	Specifications Met		Each		Each
1 3/8" × 1 3/8"	12 1/2"	15° × 60°	13/32" × 13/32"	Steel	ASME B107	0000000	000000	00000000	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
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

Two-Head Tight-Clearance Open-End Wrenches

These tools have narrow heads that fit into tight spaces and around thin fasteners. They are also known as tappet wrenches.

Size	Overall Lg.	Opening Angle	Head Thick.	Material	Appearance		Each
1 3/8" × 1 7/16"	12 1/4"	15°	1/4" × 1/4"	Chrome-Plated Steel	Polished	0000000	0000000

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	__	Plastic Roll-Up Pouch	__	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

Open-End Wrench Sets

Inch Wrench Sets
Sizes Included	Overall Lg.	Opening Angle	Material	Appearance	Container Type		Each
10-Piece Sets
1/4" × 5/16" 3/8" × 7/16" 1/2" × 9/16" 5/8" × 11/16" 3/4" × 13/16" 7/8" × 15/16" 15/16" × 1" 1 1/16" × 1 1/4" 1 1/8" × 1 1/4" 1 3/8" × 1 7/16" (Dull Appearance)	4 1/2"-17 1/4"	15°	Chrome-Plated Steel	Polished	Fabric Roll-Up Pouch	000000	0000000
12-Piece Sets
1/4" × 5/16" 3/8" × 7/16" 1/2" × 9/16" 5/8" × 11/16" 3/4" × 13/16" 7/8" × 15/16" 15/16" × 1" 1 1/16" × 1 1/4" 1 1/8" × 1 3/16" 1 1/4" × 1 5/16" 1 3/8" × 1 7/16" 1 1/2" × 1 5/8"	4 1/2"-17"	15°	Chrome-Plated Steel	Dull	Plastic Roll-Up Pouch	000000	000000

60° Angle Open-End Wrench Sets

One head is angled 60° for access to hard-to-reach fasteners. These are also known as ignition wrenches.

Dull Chrome Plated
Sizes Included	Overall Lg.	Opening Angle	Material	Container Type	Specifications Met		Each
Inch Wrench Sets
18-Piece Sets
11/32" 3/8" 7/16" 1/2" 9/16" 5/8" 11/16" 3/4" 13/16" 7/8" 15/16" 1" 1 1/16" 1 1/8" 1 1/4" 1 3/8" 1 7/16" 1 1/2"	4 3/4"-12 1/2"	15° × 60°	Steel	Plastic Roll-Up Pouch	ASME B107	0000000	0000000
Black
Inch Wrench Sets
18-Piece Sets
11/32" 3/8" 7/16" 1/2" 9/16" 5/8" 11/16" 3/4" 13/16" 7/8" 15/16" 1" 1 1/16" 1 1/8" 1 1/4" 1 3/8" 1 7/16" 1 1/2"	4 3/4"-12 1/2"	15° × 60°	Steel	Plastic Roll-Up Pouch	ASME B107	00000000	000000

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
1/2" Square Drive
1 3/8"	Steel	2"	0000000	00000	__	000000	00

Spanner Sockets

Spanner Socket in Use (Wrench Not Included)

4-Pin Socket Shape

4-Pin Socket

4-Pin

For easy tightening and loosening, these sockets have pins that grip the slotted sides on bearing nuts. These sockets require less clearance around bearings than standard hook spanner wrenches, so they’re good in tight spaces. Use them with a square-drive wrench handle or a ratchet wrench; they’re not for use with impact wrenches.

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

4-Pin
Size	Overall Length	OD	For Nut Size	For Bearing Nut Specifications Met	For Nut Diameter	Bolt Clearance Depth	Material		Each
3/8" Square Drive
1 3/8"	3"	1 13/16"	0.781"-32	ANSI/ABMA 8.2	1 3/8"	2 1/16"	Steel	00000000	0000000

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

Slotted Bit Sockets

3/4" Square Drive
Size	Overall Lg.	Material	Bit Replaceable		Each
1 3/8"	2 3/16"	Black Steel	No	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	2"	0000000	000000	000000	00
3/4" Square Drive
1 3/8"	7/8"	1 9/32"	1 7/16"	Steel	Black	2 1/4"	0000000	00000	0000000	00000
1" Square Drive
1 3/8"	25/32"	1 1/2"	2"	Steel	Black	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	3 1/2"	00000000	000000	000000	00
3/4" Square Drive
1 3/8"	7/8"	2 9/32"	1 7/16"	Steel	Black	3 1/4"	0000000	00000	0000000	00000
1" Square Drive
1 3/8"	2 1/8"	2 27/32"	2"	Steel	Black	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	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	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 13/64"	2 7/8"	Steel	Black	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

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" Long Ratchet Wrench 22" 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" Long Ratchet Wrench 19" Long Sliding-Head Wrench Handle 22" 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

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

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

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	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
No. of Pieces	Includes	Overall Lg.	Material	Finish	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"	Steel	Black	Plastic Case	0000000	0000000

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	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	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	ASME B107	0000000	000000

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	00000000	000000	00000000	000000