Thin Wrench Sets | McMaster-Carr

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System of Measurement

Drive Size

Wrench Style

Wrench Opening Shape

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Overall Length

Number of Pieces

Drive Style

Finish

Ratcheting or Nonratcheting

Nonratcheting

Ratcheting

Number of Heads

Square Drive Size

Wrench Type

Opening Angle

Container Type

Plastic Roll-Up Pouch

For Use With

Screws and Nuts

Material

Stainless Steel

Steel

Export Control Classification Number (ECCN)

EAR99

REACH

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DFARS Specialty Metals

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Jaw Type

Appearance

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35 Products

Two-Head Tight-Clearance Open-End Wrench Sets

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

Inch Wrench Sets
Sizes Included	Overall Lg.	Opening Angle	Material	Appearance	Container Type		Each
5-Piece Sets
7/16" × 1/2" 1/2" × 9/16" 9/16" × 5/8" 11/16" × 3/4" 13/16" × 7/8"	10"	15°	Chrome-Plated Steel	Dull	Fabric Roll-Up Pouch	0000000	0000000
Metric Wrench Sets
6-Piece Sets
8 mm × 9 mm 10 mm × 11 mm 12 mm × 13 mm 14 mm × 15 mm 16 mm × 17 mm 18 mm × 19 mm	6 7/8"-9 7/8"	15°	Chrome-Plated Steel	Dull	Fabric Roll-Up Pouch	00000000	000000

Tight-Clearance Open-End Wrench Sets

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

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

Inch Wrench Sets
Sizes Included	Overall Lg.	Opening Angle	Material	Finish	Appearance	Container Type	Specifications Met		Each
7-Piece Sets
7/16" 1/2" 9/16" 5/8" 11/16" 3/4" 7/8"	4"-6 5/8"	15°	Steel	Black Oxide	__	Plastic Roll-Up Pouch	ASME B107.100	0000000	0000000
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 B107.100	0000000	000000
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 B107.100	0000000	000000
Metric Wrench Sets
9-Piece Sets
10 mm 11 mm 12 mm 13 mm 14 mm 15 mm 16 mm 17 mm 19 mm	4"-6 1/8"	15°	Steel	Black Oxide	__	Plastic Roll-Up Pouch	ASME B107.100	0000000	000000
11-Piece Sets
19 mm 21 mm 22 mm 24 mm 27 mm 30 mm 32 mm 36 mm 37 mm 38 mm 40 mm	6 3/8"-8"	30°	Steel	Chrome Plated	Dull	Plastic Roll-Up Pouch	ASME B107.100	0000000	000000

75° Angle Tight-Clearance Open-End Wrench Sets

One head is angled 75° for access to hard-to-reach fasteners. These slim wrenches fit into tight spaces and around thin fasteners. They are also known as ignition wrenches.

Inch Wrench Sets
Sizes Included	Overall Lg.	Opening Angle	Material	Appearance	Container Type		Each
9-Piece Sets
7/32" 15/64" 1/4" 9/32" 5/16" 11/32" 3/8" 7/16" 1/2"	3"-5 3/4"	15° × 75°	Chrome-Plated Steel	Dull	Fabric Roll-Up Pouch	0000000	000000
Metric Wrench Sets
16-Piece Sets
3.2 mm 4 mm 5 mm 5.5 mm 6 mm 7 mm 8 mm 9 mm 10 mm 11 mm 12 mm 13 mm 14 mm 15 mm 16 mm 17 mm	2 3/4"-5 1/2"	15° × 75°	Chrome-Plated Steel	Dull	Fabric Roll-Up Pouch	0000000	000000

Miniature Open-End Wrench Sets

Sized for working on small equipment, these wrenches are 4 1/8" long with a slim head and handle.

Inch Wrench Sets
Sizes Included	Overall Lg.	Opening Angle	Material	Finish	Container Type		Each
8-Piece Sets
5/64" 3/32" 7/64" 1/8" 5/32" 3/16" 1/4" 5/16"	4 1/8"	30°	Steel	Black Oxide	Plastic Pouch	0000000	000000
Metric Wrench Sets
8-Piece Sets
2.5 mm 3 mm 3.2 mm 4 mm 5 mm 5.5 mm 6 mm 7 mm	4 1/8"	30°	Steel	Black Oxide	Plastic Pouch	0000000	00000

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 B107.100	0000000	0000000
Metric Wrench Sets
15-Piece Sets
10 mm 11 mm 12 mm 13 mm 14 mm 15 mm 16 mm 17 mm 18 mm 19 mm 21 mm 22 mm 24 mm 27 mm 30 mm	4 3/4"-11"	15° × 60°	Steel	Plastic Roll-Up Pouch	ASME B107.100	0000000	000000
Black Oxide
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 B107.100	00000000	000000

Box-End Wrench Head Sets

Wrench Not Included

Attach one of the heads in these sets to a torque wrench for more leverage to loosen a stubborn fastener. Also known as torque adapters. You can easily calculate your desired torque setting with the precise 2” center-to-center length. The wrench heads can also be connected to an extension to reach fasteners when vertical clearance is limited. The box end grips all sides of the fastener to prevent slipping. For use with hand-drive tools only.

3/8" Square Drive
No. of Pieces	Includes	Center-to-Center Lg.	Material		Each
9	Wrench Heads: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8"	2"	Chrome-Plated Steel	00000000	0000000

Wrench Head Sets

Wrench and Socket Extension Not Included

Wrench Head Set with Clip Rail

Wrench Head Set

Reach nuts obstructed by a fluid line or other barrier with the wrench heads in these sets. Connect them to a socket extension and ratchet wrench to turn fasteners where clearance is limited from both the top and side. You can also attach one directly to your ratchet wrench to convert it into an open-ended ratcheting wrench. Also known as crowfoot wrenches.

Inch
Wrench Opening Shape	No. of Pieces	Includes	Material	Container Type		Each
3/8" Square Drive
Rounded	10	Wrench Heads: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 1"	Chrome-Plated Steel	Metal Clip Rail	0000000	0000000
Rounded	15	Wrench Heads: 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 3/16", 1 1/4"	Chrome-Plated Steel	__	00000000	000000
1/2" Square Drive
Rounded	7	Wrench Heads: 15/16", 1", 1 1/16", 1 1/8", 1 1/4", 1 7/16", 1 1/2"	Chrome-Plated Steel	Metal Clip Rail	0000000	000000
Rounded	15	Wrench Heads: 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"	Chrome-Plated Steel	__	00000000	000000
Inch/Metric
3/8" Square Drive
Rounded	30	Wrench Heads (Inch): 5/16", 11/32", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1" Wrench Heads (Metric): 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm	Nickel-Plated Steel	Plastic Clip Rail	00000000	000000
Metric
1/4" Square Drive
Rounded	7	Wrench Heads: 7 mm, 8 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm	Chrome-Plated Steel	__	00000000	000000
3/8" Square Drive
Rounded	10	Wrench Heads: 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm	Chrome-Plated Steel	Metal Clip Rail	0000000	000000

Snap-Open Ratcheting Box-End Wrench Head Sets

Wrench and Socket Extension Not Included

Get a strong grip in tight areas, even on fasteners that are rounded or damaged. Open the spring-loaded jaws in these heads to access a fastener like an open-end wrench; the jaws will automatically close when you push against the fastener. The 6-point opening grips hex heads on all sides. Also known as crowfoot wrenches. Attach one to a socket extension to reach obstructed fasteners. With the ratcheting feature, you can turn the fastener without removing and repositioning the wrench head.

3/8" Square Drive
No. of Pieces	Includes	Turn Required to Ratchet	Material	Wrench Opening Shape	Container Type		Each
6	Wrench Heads: 8 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm	15°	Stainless Steel	6-Point	Foam Tray	000000000	0000000

Secure-Grip Wrench Head Sets

Wrench and Socket Extension Not Included

Grip more of your fastener head with these wrench heads. They have a hex or 12-point opening with more surface area than rounded wrench heads, so they make more contact with fasteners for a better hold. Also known as flare-nut crowfoot wrenches or line wrenches, they're often used with flared tube fittings as well as fuel and hydraulic lines. Connect them to a socket extension and ratchet wrench to turn fasteners where clearance is limited from both the top and side. You can also attach one directly to your ratchet wrench to convert it into an open-ended ratcheting wrench.

3/8" Square Drive
No. of Pieces	Includes	Material	Wrench Opening Shape		Each
8	Wrench Heads: 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", 1 1/16"	Chrome-Plated Steel	12-Point	0000000	0000000
18	Wrench Heads: 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 27 mm	Nickel-Plated Steel	Hex	00000000	000000
1/2" Square Drive
8	Wrench Heads: 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	12-Point	0000000	000000

Ratcheting Wrench Head Sets

Wrench and Socket Extension Not Included

Connect one of the heads in these sets to a socket extension to reach an obstructed fastener, then turn the fastener without removing and repositioning the wrench head. These also work well where clearance is limited from both the top and side. Alternatively, attach a head directly to a wrench handle to convert it into an open-ended ratcheting wrench. Also known as crowfoot wrenches.

Inch
No. of Pieces	Includes	Turn Required to Ratchet	Material	Container Type		Each
3/8" Square Drive
11	Wrench Heads: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1"	60°	Chrome-Plated Steel	Plastic Case	000000000	0000000
Metric
3/8" Square Drive
10	Wrench Heads: 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm	60°	Chrome-Plated Steel	Plastic Case	000000000	000000

Open-End 6-Point Socket Sets

The sockets in these sets have a cutout and extra length so you can reach and twist nuts without having to disconnect your line. Connect them to a ratchet wrench to turn nuts around a wired sensor, fuel line, or hose without having to remove and reposition your wrench. The hex shape achieves the best possible grip on hex fasteners to prevent rounding their points. For use with hand-drive tools only.

3/8" Square Drive—Chrome-Plated Steel
No. of Pieces	Includes		Each
10	Deep Sockets: 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm	00000000	0000000

Nonmarring 6-Point Impact Socket Sets

Tighten or loosen nuts and bolts without damaging the finish. The tough steel core of the socket withstands the high torque of impact tools, but the insert and outer sleeve are made of plastic, which won’t scratch chrome plating and other coatings. The hex shape achieves the best possible grip on hex fasteners to prevent rounding their points.

1/2" Square Drive—Steel
No. of Pieces	Components Included	Includes	Insert Material	Sleeve Material	Container Type		Each
9	9 Sockets	Deep Sockets (Inch): 3/4", 13/16", 7/8", 15/16", 1", 1 1/16" Deep Sockets (Metric): 17 mm, 19 mm, 21 mm	Plastic	Plastic	Plastic Case	00000000	0000000

Flex-Head Ratcheting Combination Wrench Sets

Pivot the box end for access to fasteners in tight spots. These wrenches have a ratchet mechanism that allows you to turn fasteners without removing and repositioning the tool. These wrenches are polished for a mirror-like finish.

		Flex-Head Box End
Drive Size	Overall Lg.	Flex Range of Motion	Turn Required to Ratchet	Open-End Opening Angle	Material	Appearance		Each
Inch Wrench Sets—12-Point Box Opening
Vertical Flex—10-Piece Sets
1/4" 5/16" 11/32" 3/8" 7/16" 1/2" 9/16" 5/8" 11/16" 3/4"	5 1/2"-9 3/4"	180°	4°	15°	Chrome-Plated Steel	Polished	0000000	0000000
Metric Wrench Sets—12-Point Box Opening
Vertical Flex—12-Piece Sets
8 mm 9 mm 10 mm 11 mm 12 mm 13 mm 14 mm 15 mm 16 mm 17 mm 18 mm 19 mm	5 1/2"-9 5/16"	180°	4°	15°	Chrome-Plated Steel	Polished	0000000	000000

Socket Wrench Sets

These wrenches have one pivoting socket end and one open end.

		Socket End			Open End
Number of Pieces	Drive Size	Opening Shape	Head Style	Flex Range of Motion	Opening Angle	Material	Appearance	Container Type		Each
4	7/16", 1/2", 9/16", 5/8"	12-Point	Flex	180°	15°	Chrome-Plated Steel	Dull	Fabric Roll-Up Pouch	0000000	0000000
7	3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"	12-Point	Flex	180°	15°	Chrome-Plated Steel	Dull	Fabric Roll-Up Pouch	0000000	000000

Tight-Clearance Flexible L-Key Sets

Hex

The assorted tools in these sets have a flexible joint that provides access to fasteners in hard-to-reach areas.

Long Length
Number of Pieces	Includes	Material	Container Type		Each
7	3/32" Hex L-Key (4 3/16" O'all Lg.) 7/64" Hex L-Key (4 3/16" O'all Lg.) 1/8" Hex L-Key (4 7/16" O'all Lg.) 9/64" Hex L-Key (4 11/16" O'all Lg.) 5/32" Hex L-Key (4 15/16" O'all Lg.) 3/16" Hex L-Key (5 7/16" O'all Lg.) 7/32" Hex L-Key (5 9/16" O'all Lg.)	Steel	Plastic Pouch	0000000	000000