16 mm Hex Drivers | McMaster-Carr

Standard
Size	Material	Specifications Met	Overall Lg.		Each
1/4" Square Drive
16 mm	Chrome-Plated Steel	ASME B107.110	7/8"	000000	00000
3/8" Square Drive
16 mm	Chrome-Plated Steel	ASME B107.110	1 1/8"	0000000	0000
1/2" Square Drive
16 mm	Chrome-Plated Steel	ASME B107.110, SAE AS955	1 1/2"	0000000	0000
Deep
3/8" Square Drive
16 mm	Chrome-Plated Steel	ASME B107.110, SAE AS955	2 3/4"	0000000	0000
1/2" Square Drive
16 mm	Chrome-Plated Steel	ASME B107.5M	3 1/8"	00000000	00000

6-Point Flex Sockets

Pivot the head to access fasteners from an angle. The hex shape provides the best possible grip on hex fasteners and prevents rounding.

3/8" Square Drive
Size	Overall Lg.	OD	Material		Each
16 mm	1 7/8"	23/32"	Chrome-Plated Steel	00000000	000000

Nonmarring 6-Point Sockets

Socket

Replacement Insert

Tightly grip nuts and bolts with hand-driven tools, leaving finishes unscratched. With a six-point shape, these sockets give you maximum leverage and prevent rounding while turning hex head fasteners. They contain a plastic insert, so they won’t damage highly polished finishes or coatings. Since they help maintain smooth surfaces where bacteria can’t grow—and also because they’re FDA compliant for direct contact with food—these sockets are commonly used in food, beverage, and pharmaceutical facilities. An O-ring grip keeps the insert secure in sockets during use, and also lets you replace worn-down inserts by hand.

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

Sockets									Replacement Inserts
Size	Overall Lg.	OD	Material	Insert Material	O-Ring Material	Specifications Met		Each		Each
1/2" Square Drive
16 mm	1 1/2"	29/32"	Chrome-Plated Steel	Plastic	Buna-N Rubber	FDA Compliant 21 CFR 177.1630	0000000	000000	0000000	000000

12-Point Sockets

Standard

Deep

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

		Standard			Deep
Size	Material	Overall Lg.		Each	Overall Lg.		Each
Chrome Plated
3/8" Square Drive
16 mm	Steel	1 1/8"	0000000	00000	2 3/4"	0000000	00000
1/2" Square Drive
16 mm	Steel	1 1/2"	0000000	0000	3 1/4"	0000000	00000

12-Point Flex Sockets

Pivot the head to access fasteners from an angle. These sockets have a 12-point shape that quickly positions on hex fasteners.

3/8" Square Drive
Size	Overall Lg.	OD	Material		Each
16 mm	2"	55/64"	Chrome-Plated Steel	00000000	000000

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.

3/8" Square Drive
Size	Overall Lg.	Thick.	Center-to-Center Lg.	Material		Each
16 mm	1 5/8"	7/32"	7/8"	Chrome-Plated Steel	0000000	000000

Bolt-Through Sockets

Turn nuts on bolts and threaded rod, which pass through these sockets. They require a bolt-through ratchet wrench.

Size	Overall Lg.	OD	For Max. Bolt Dia.	Material		Each
16 mm	1 1/4"	53/64"	3/8"	Chrome-Plated Steel	00000000	00000

Bolt-Through Ratchet Wrench

00000000

Each

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Impact Hex Bit Sockets

These sockets are made to withstand the high torque and force of impact tools.

1/2" Square Drive
Size	Overall Lg.	Material	Finish	Bit Replaceable		Each
16 mm	3"	Steel	Black	No	00000000	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.

Standard

	Clearance Depth
Size	Nut	Bolt	Material	Finish	Overall Lg.		Each
3/8" Square Drive
16 mm	19/32"	5/8"	Steel	Black	1 1/8"	0000000	00000
1/2" Square Drive
16 mm	15/32"	7/8"	Steel	Black	1 1/2"	0000000	0000

Deep

	Clearance Depth
Size	Nut	Bolt	Material	Finish	Overall Lg.		Each
3/8" Square Drive
16 mm	13/32"	1 9/16"	Steel	Black	2 3/8"	0000000	00000
1/2" Square Drive
16 mm	29/64"	1 31/32"	Steel	Black	3 1/4"	0000000	00000

Fastener-Holding 6-Point Impact Sockets

A magnet holds the fastener securely enough to drive self-tapping screws. These sockets have a hex shape that grips hex fasteners and prevents rounding. They are made to withstand the high torque and force of impact tools.

3/8" Square Drive
Size	Overall Lg.	OD	Nut Clearance Depth	Material	Finish		Each
16 mm	1 3/16"	15/16"	15/64"	Steel	Black	0000000	000000

6-Point Flex Impact Sockets

Standard

Pivot the head to access fasteners from an angle. These sockets have a hex shape that grips hex fasteners and prevents rounding. They are made to withstand the high torque and force of impact tools.

	Clearance Depth
Size	Nut	Bolt	Material	Finish	Overall Lg.		Each
Standard
3/8" Square Drive
16 mm	25/64"	35/64"	Steel	Black	2 5/16"	0000000	000000
1/2" Square Drive
16 mm	33/64"	5/8"	Steel	Black	2 9/16"	000000	00000

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.

Standard

	Clearance Depth
Size	Nut	Bolt	Material	Finish	Overall Lg.		Each
1/2" Square Drive
16 mm	7/16"	21/32"	Steel	Black	1 1/2"	0000000	00000

Economy 6-Point Socket Sets

Suitable for occasional maintenance work, these sets are imported. The hex shape grips hex fasteners and prevents rounding.

1/4", 3/8" Square Drive—Chrome-Plated Steel
No. of Pieces	Components Included	Includes		Each
75	70 Sockets 2 Drive Tools 3 Extensions	1/4" Standard Sockets (Inch): 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2" 1/4" Deep Sockets (Inch): 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2" 1/4" Standard Sockets (Metric): 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm 1/4" Deep Sockets (Metric): 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm 3/8" Standard Sockets (Inch): 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 13/16" 3/8" Deep Sockets (Inch): 3/8", 7/16", 1/2", 9/16" 3/8" Standard Sockets (Metric): 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 19 mm 3/8" Deep Sockets (Metric): 10 mm, 12 mm, 13 mm 3/8" Deep Spark-Plug (Inch): 5/8" 5 1/2" Long 1/4" Square Drive Ratchet Wrench 5 1/2" Long 3/8" Square Drive Ratchet Wrench 3" Long 3/8" Square Drive Extension 3" Long 1/4" Square Drive Extension 6" Long 1/4" Square Drive Extension	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

3/8" Square Drive
No. of Pieces	Includes		Each
12	Deep Sockets: 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm	0000000	000000
12	Standard Sockets: 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm	0000000	00000
1/2" Square Drive
15	Standard Sockets: 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	000000	000000

Sockets with Drive Tools—Chrome-Plated Steel

3/8" Square Drive
No. of Pieces	Components Included	Includes		Each
18	14 Sockets 1 Drive Tool 2 Extensions 1 Adapter	Standard Sockets: 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm 8" Long Ratchet Wrench 3" Long Extension 6" Long Extension 2" Long Flex Adapter	0000000	0000000
27	24 Sockets 2 Drive Tools 1 Extension	Standard Sockets: 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm Deep Sockets: 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm 7 5/8" Long Ratchet Wrench 8 9/16" Long Flex-Head Wrench Handle 6" Long Extension	0000000	000000

Foam Socket Organizer for 10 Piece 1/4" Square Drive Size Set	Each	000000
Foam Socket Organizer for 15 Piece 1/2" Square Drive Size Set	Each	00000
Foam Socket Organizer for 19 Piece 3/8" Square Drive Size Set	Each	00000

Value 6-Point Socket Sets

For high quality at a lower price, choose these U.S.A.-made sets. They have a hex shape that grips hex fasteners and prevents rounding.

Sockets with Drive Tools—Chrome-Plated Steel

3/8" Square Drive
No. of Pieces	Components Included	Includes		Each
24	22 Sockets 1 Drive Tool 1 Extension	Standard Sockets: 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm Deep Sockets: 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 17 mm, 19 mm Deep Spark-Plug: 5/8" 7 3/4" Long Ratchet Wrench 3" Long Extension	00000000	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—Chrome-Plated Steel

3/8" Square Drive
No. of Pieces	Includes		Each
12	Deep Sockets: 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm	0000000	000000
12	Standard Sockets: 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm	0000000	00000
1/2" Square Drive
15	Deep Sockets: 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, 24 mm, 25 mm	0000000	000000

Sockets with Drive Tools—Chrome-Plated Steel

3/8" Square Drive
No. of Pieces	Components Included	Includes		Each
16	14 Sockets 1 Drive Tool 1 Extension	Standard Sockets: 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm 8 1/2" Long Ratchet Wrench 6" Long Extension	0000000	0000000
29	24 Sockets 2 Drive Tools 2 Extensions 1 Adapter	Standard Sockets: 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm Deep Sockets: 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm 7" Long Ratchet Wrench 8 1/2" Long Flex-Head Wrench Handle 3" Long Extension 6" Long Extension 1 7/8" Long Flex Adapter	0000000	000000

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

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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—Chrome-Plated Steel

3/8" Square Drive
No. of Pieces	Includes		Each
13	Standard Sockets: 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm	00000000	000000

Sockets with Drive Tools—Chrome-Plated Steel

1/2" Square Drive
No. of Pieces	Components Included	Includes		Each
16	14 Sockets 1 Drive Tool 1 Extension	Standard Sockets: 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 10" Long Ratchet Wrench 5" Long Extension	00000000	0000000

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.

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

Bolt-Through Socket Sets

Turn nuts on bolts and threaded rod, which pass through these sockets. They require a bolt-through ratchet wrench.

No. of Pieces	Components Included	Includes	For Max. Bolt Dia.	Material		Each
21	17 Sockets 1 Drive Tool 1 Extension 2 Adapters	Inch Sockets: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4" Metric Sockets: 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm 12" Long Ratchet Wrench 3" Long Extension Adapter for 1/4" Square Drive Sockets Adapter for 3/8" Square Drive Sockets	3/8"	Chrome-Plated Steel	0000000	000000

Impact Hex Bit Socket Sets

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.

1/2" Square Drive
No. of Pieces	Includes	Overall Lg.	Material	Finish	Container Type		Each
13	Bit Sockets: 6 mm, 7 mm, 8 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm (4" O'all Lg.)	4"	Steel	Black	Metal Clip Rail	0000000	0000000
13	Bit Sockets: 6 mm, 7 mm, 8 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm (6" O'all Lg.)	6"	Steel	Black	Metal Clip Rail	0000000	000000

6-Point Impact Socket Sets

Sockets

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

3/8" Square Drive—Steel
No. of Pieces	Components Included	Includes	Finish		Each
13	13 Sockets	Standard Sockets: 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm	Black	0000000	000000
13	13 Sockets	Deep Sockets: 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm	Black	0000000	00000
40	40 Sockets	Standard Sockets (Inch): 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4" Standard Sockets (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 Deep Sockets (Inch): 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4" Deep Sockets (Metric): 8 mm	Black	0000000	000000
1/2" Square Drive—Steel
16	16 Sockets	Standard Sockets: 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	Black	0000000	000000
16	16 Sockets	Deep Sockets: 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	Black	0000000	000000

6-Point Flex Impact Socket Sets

Pivot the head to access fasteners from an angle. These sockets have a hex shape that grips hex fasteners and prevents rounding. They are made to withstand the high torque and force of impact tools.

3/8" Square Drive
No. of Pieces	Includes	Material	Finish		Each
10	Standard Sockets: 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm	Steel	Black	0000000	0000000

Tight-Clearance Open-End Wrenches

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

						Black
Size	Overall Lg.	Opening Angle	Head Thick.	Material	Specifications Met		Each
16 mm	5 1/8"	15°	3/16"	Steel	ASME B107	000000	000000

Tight-Clearance Open-End Wrench Sets

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

Metric Wrench Sets
Sizes Included	Overall Lg.	Opening Angle	Material	Finish	Container Type		Each
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	Plastic Roll-Up Pouch	0000000	0000000

Deep-Offset Ratcheting Box Wrenches

12-Point Opening

A 25° offset head provides clearance when reaching over obstructions. The ratchet mechanism allows you to turn fasteners in tight spaces without removing and repositioning the tool. Wrenches with 12-point opening are easier to position on hex fasteners than wrenches with 6-point opening but make less contact. The smaller the turn required to ratchet, the less clearance you need to engage the ratchet.

12-Point Opening
Size	Overall Lg.	Head Offset Angle	Head Thick.	Turn Required to Ratchet	Material	Appearance	Grip Material	Specifications Met		Each
16 mm	7 3/4"	25°	1/2"	25°	Chrome-Plated Steel	Polished	Plastic	Fed. Spec. GGG-W-001405	00000000	000000

Snap-Open Ratcheting Box Wrench Sets

Open the jaws to fit around a fastener like an open-end wrench; close the jaws and the wrench acts like a ratcheting box wrench, allowing you to turn fasteners without removing and repositioning the tool. The smaller the turn required to ratchet, the less clearance you need to engage the ratchet.

Metric Wrench Sets—12-Point Opening
Sizes Included	Overall Lg.	Turn Required to Ratchet	Material	Finish	Container Type		Each
10-Piece Sets
10 mm 11 mm 12 mm 13 mm 14 mm 15 mm 16 mm 17 mm 18 mm 19 mm	5 7/16"-7 1/4"	30°	Steel	Black	Plastic Roll-Up Pouch	0000000	0000000

Changeable-Head Torque Wrenches

Change heads to use these tools as an open-end, box, square drive, or hex-key wrench. When the set torque is reached, these wrenches indicate with an audible click and a momentary release. To reverse torque-limiting direction, remove head, turn handle over, and reattach head. The handle and head combination you choose may have different maximum torque values. Do not exceed the lower value.

Open-End Heads

Hex

Hex
Size	Max. Torque	Opening Angle	Material	Finish		Each
16 mm	592 in.-lbs.	15°	Steel	Black	00000000	000000

Spline Ratcheting Combination Wrenches

A spline-shaped box end turns spline, hex, and 12-point fasteners with minimal effort. This shape also gets a better grip on rounded fasteners that can be difficult to turn with a traditional wrench. These wrenches have a ratchet mechanism that allows you to turn fasteners in tight spaces without removing and repositioning. Flip over to ratchet in the opposite direction. Wrenches are polished for a mirror-like finish.

Box End
External Hex/12-Point Size	External Spline Size	Head Offset Angle	Head Thick.	Turn Required to Ratchet	Size	Head Thick.	Opening Angle	Overall Lg.	Material	Appearance		Each
16 mm	No. 16	15°	25/64"	5°	16 mm	13/32"	15°	9 1/2"	Chrome-Plated Steel	Polished	0000000	000000

Spline Ratcheting Combination Wrench Sets

A spline-shaped box end turns spline, hex, and 12-point fasteners. This shape also gets a better grip on rounded fasteners that can be difficult to turn with a traditional wrench. These wrenches have a ratchet mechanism that allows you to turn fasteners in tight spaces without removing and repositioning the tool. Wrenches are polished for a mirror-like finish.

Box End				Open End
External Hex/12-Point Size	External Spline Size	Head Offset Angle	Turn Required to Ratchet	Size	Opening Angle	Overall Lg.	Material	Container Type		Each
Metric Wrench Sets
14-Piece Sets
6 mm 7 mm 8 mm 9 mm 10 mm 11 mm 12 mm 13 mm 14 mm 15 mm 16 mm 17 mm 18 mm 19 mm	No. 6 No. 7 No. 8 No. 9 No. 10 No. 11 No. 12 No. 13 No. 14 No. 15 No. 16 No. 17 No. 18 No. 19	15°	5°	6 mm 7 mm 8 mm 9 mm 10 mm 11 mm 12 mm 13 mm 14 mm 15 mm 16 mm 17 mm 18 mm 19 mm	15°	4 15/16"-11 1/16"	Chrome-Plated Steel	Plastic Roll-Up Pouch	0000000	0000000

Terms and Conditions and Privacy Policy

About Torque Tools

L-Keys

6-Point Sockets

6-Point Flex Sockets

Nonmarring 6-Point Sockets

12-Point Sockets

12-Point Flex Sockets

Tight-Clearance Offset Sockets

Bolt-Through Sockets

Impact Hex Bit Sockets

6-Point Impact Sockets

Fastener-Holding 6-Point Impact Sockets

6-Point Flex Impact Sockets

12-Point Impact Sockets

Economy 6-Point Socket Sets

Premium 6-Point Socket Sets

Value 6-Point Socket Sets

Premium 12-Point Socket Sets

Value 12-Point Socket Sets

Tight-Clearance Offset Socket Sets

Bolt-Through Socket Sets

Impact Hex Bit Socket Sets

6-Point Impact Socket Sets

6-Point Flex Impact Socket Sets

Tight-Clearance Open-End Wrenches

Tight-Clearance Open-End Wrench Sets

Deep-Offset Ratcheting Box Wrenches

Snap-Open Ratcheting Box Wrench Sets

Changeable-Head Torque Wrenches

Spline Ratcheting Combination Wrenches

Spline Ratcheting Combination Wrench Sets