Nonmarring Wrenches | McMaster-Carr

	Wrench Style Wrench Style

	Open End
	Strap

	Jaw Style Jaw Style


Straight	Round

	System of Measurement System of Measurement

Metric

Inch

	Maximum Jaw Capacity Maximum Jaw Capacity

2 3/4"

2 13/16"

3 7/8"

	For Maximum OD For Maximum OD

	Individual/Set Individual/Set

Individual

Set

	For Use With For Use With

Pipe

Round and Irregular Objects

	Strap Material Strap Material

Rubber-Coated Polyester
Fabric

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

DFARS Specialty Metals
COTS-Exempt

	Overall Length Overall Length

	Handle Material Handle Material

	For Minimum OD For Minimum OD

	Jaw Material Jaw Material

Steel

Aluminum-Bronze

	Jaw Type Jaw Type

Adjustable

Fixed

	Strap Width Strap Width

	Material Material

Steel

Aluminum-Bronze

	Size Size

	Square Drive Size Square Drive Size

3/8"

1/2"

	Handle Length Handle Length

	Strap Length Strap Length

	Specifications Met Specifications Met

ASME

Fed. Spec.

FDA Compliant

	Strap Replaceable Strap Replaceable

Yes

	For Pipe OD For Pipe OD

View catalog pages (5)

Forward

How can we improve?

57 Products

Nonmarring Pipe Wrenches

Also known as monkey and auto wrenches, these tools have smooth jaws that won't scratch your workpiece.

	Jaw
Overall Lg.	Max. Capacity	Texture	Specifications Met		Each
Straight Jaw
Chrome-Plated Steel
9"	2 3/4"	Smooth	__	000000	000000
11"	3"	Smooth	ASME B107	000000	00000
15"	3 7/8"	Smooth	ASME B107	000000	00000
18"	3 7/8"	Smooth	ASME B107	000000	000000

Round-Grip Nonmarring Pipe Wrenches

Jaw and Handle Sold Separately

Build your own pipe wrench by pairing a handle and jaw to grip most round surfaces, even highly polished objects. Push down on the wrench and pull the handle toward you—the jaws will tighten around the workpiece.

Jaws

	Jaw
For Handle Lg.	Wd.	Material	Texture	Style	Type	For Pipe OD		Each
10"	2"	Steel	Smooth	Round	Fixed	1", 1 1/16", 1 1/8", 1 1/4", 1 5/16"	0000000	0000000
20"	3 1/8"	Steel	Smooth	Round	Fixed	1 1/4", 1 1/2", 1 3/4", 1 7/8", 2", 2 1/8"	0000000	000000

Handles

For Jaw Wd.	Lg.	Material		Each
2"	10"	Red-Painted Steel	0000000	0000000
3 1/8"	20"	Red-Painted Steel	0000000	000000

Nonsparking Nonmarring Pipe Wrenches

Also known as railroad wrenches, these tools have smooth jaws that won't scratch your workpiece. Made of aluminum-bronze that is Factory Mutual approved, they inhibit sparking and are nonmagnetic and corrosion resistant. Wrenches 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.

	Jaw
Overall Lg.	Max. Capacity	Material	Texture	Specifications Met		Each
Straight Jaw
Aluminum-Bronze
15"	2 13/16"	Aluminum-Bronze	Smooth	FM Approved	0000000	0000000
18"	3"	Aluminum-Bronze	Smooth	FM Approved	0000000	000000

Strap Wrenches

Iron Handle

Plastic Handle

Aluminum Handle

The nonmarring strap grips plastic pipe, tubing, hand wheels, filters, and objects with highly polished surfaces.

Wrenches
	Handle		Strap							Replacement Straps
For OD	Lg.	Material	Wd.	Lg.	Thick.	Material	Specifications Met		Each		Each
1/4"-4"	6"	Iron	1/2"	22"	1/32"	Polyester Fabric	__	0000000	000000	0000000	00000
1/2"-2"	12"	Iron	1 1/4"	17"	1/16"	Rubber-Coated Polyester Fabric	Fed. Spec. GGG-W-651e	000000	00000	000000	00000
1/2"-4"	6"	Plastic	1/2"	20"	1/8"	Rubber	__	00000000	0000	00000000	0000
3/4"-6 3/4"	8"	Plastic	3/4"	24"	3/16"	Rubber	__	00000000	00000	00000000	0000
3/4"-11"	8"	Aluminum	3/4"	38"	3/16"	Rubber	__	00000000	00000	00000000	00000
1 1/4"-6 1/2"	18"	Iron	1 3/4"	30"	3/32"	Rubber-Coated Polyester Fabric	Fed. Spec. GGG-W-651e	000000	00000	000000	00000
2 3/8"-12"	24"	Iron	2 1/4"	54"	3/32"	Rubber-Coated Polyester Fabric	__	000000	000000	000000	00000

Square Drive Strap Wrenches

3/8" Square Drive Size (Ratchet Wrench Not Included)

1/2" Square Drive Size (Ratchet Wrench Not Included)

Pair these tools with your ratchet wrench to get more leverage. The nonmarring strap grips plastic pipe, tubing, hand wheels, filters, and objects with highly polished surfaces.

Wrenches
		Handle		Strap							Replacement Straps
Square Drive Size	For OD	Lg.	Material	Wd.	Lg.	Thick.	Material	Replaceable		Each		Each
3/8"	1/2"-2"	6 1/2"	Aluminum	1/2"	12"	5/64"	Rubber/Fabric Blend	Yes	0000000	000000	0000000	000000
1/2"	3/4"-6"	6"	Steel	2"	23"	1/16"	Nylon Fabric	No	0000000	00000	000000	00

Secure-Grip Strap Wrenches

While some wrenches require you hold the strap, these have a shackle that keeps the strap closed for extra turning force and quick adjustment. They're nonmarring and grip plastic pipe, tubing, hand wheels, filters, and objects with highly polished surfaces.

Wrenches
	Handle		Strap							Replacement Straps
For OD	Lg.	Material	Wd.	Lg.	Thick.	Material	Specifications Met		Each		Each
1/2"-2"	12"	Iron	1 1/4"	17"	1/16"	Rubber-Coated Polyester Fabric	Fed. Spec. GGG-W-651e	0000000	0000000	0000000	000000
1 1/4"-6 1/2"	18"	Iron	1 3/4"	30"	3/32"	Rubber-Coated Polyester Fabric	Fed. Spec. GGG-W-651e	0000000	000000	0000000	00000
2 3/8"-12"	24"	Iron	2 1/4"	54"	3/32"	Rubber-Coated Polyester Fabric	__	0000000	000000	0000000	00000

Strap Wrench Sets

The nonmarring strap grips plastic pipe, tubing, hand wheels, filters, and objects with highly polished surfaces.

Wrench Sets						Replacement Straps
Number of Pieces	Includes	Handle Material	Strap Material		Each		Each
2	Strap Wrench for 1/2"-4" OD—1/2" Strap Wd. × 20" Strap Lg. × 1/8" Strap Thick. × 6" Handle Lg. Strap Wrench for 3/4"-6 3/4" OD—3/4" Strap Wd. × 24" Strap Lg. × 3/16" Strap Thick. × 8" Handle Lg.	Plastic	Rubber	00000000	000000	00000000	00000

Nonmarring 6-Point Impact Sockets

3 5/8" Lg.

6" Lg.

15/16"

17 mm

19 mm

21 mm

22 mm

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. Remove the outer sleeve for a thinner profile when working in tight spaces. Each size is a different color for easy identification.

			Clearance Depth
Size	Overall Lg.	OD	Nut	Bolt	Material	Insert Material	Sleeve Material	Color		Each
1/2" Square Drive
15/16"	3 5/8"	1 3/8"	45/64"	2 19/64"	Steel	Plastic	Plastic	Silver	0000000	00000
17 mm	3 5/8"	1 1/16"	1 7/32"	2 3/16"	Steel	Plastic	Plastic	Blue	0000000	0000
17 mm	6"	1 1/16"	1 7/64"	3 51/64"	Steel	Plastic	Plastic	Blue	0000000	00000
19 mm	3 5/8"	1 1/8"	1 3/64"	1 11/16"	Steel	Plastic	Plastic	Yellow	0000000	0000
19 mm	6"	1 1/8"	1 7/32"	5 7/16"	Steel	Plastic	Plastic	Yellow	0000000	00000
21 mm	3 5/8"	1 3/16"	1 1/16"	1 47/64"	Steel	Plastic	Plastic	Red	0000000	0000
21 mm	6"	1 3/16"	1 3/16"	5 7/16"	Steel	Plastic	Plastic	Red	0000000	00000
22 mm	3 5/8"	1 1/4"	31/32"	1 41/64"	Steel	Plastic	Plastic	Green	0000000	0000
22 mm	6"	1 1/4"	15/16"	2 1/4"	Steel	Plastic	Plastic	Green	0000000	00000

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
7 mm	1 1/2"	39/64"	Chrome-Plated Steel	Plastic	Buna-N Rubber	FDA Compliant 21 CFR 177.1630	0000000	000000	0000000	000000
8 mm	1 1/2"	21/32"	Chrome-Plated Steel	Plastic	Buna-N Rubber	FDA Compliant 21 CFR 177.1630	0000000	00000	0000000	00000
10 mm	1 1/2"	3/4"	Chrome-Plated Steel	Plastic	Buna-N Rubber	FDA Compliant 21 CFR 177.1630	0000000	00000	0000000	00000
13 mm	1 1/2"	29/32"	Chrome-Plated Steel	Plastic	Buna-N Rubber	FDA Compliant 21 CFR 177.1630	0000000	00000	0000000	00000
16 mm	1 1/2"	1 3/64"	Chrome-Plated Steel	Plastic	Buna-N Rubber	FDA Compliant 21 CFR 177.1630	0000000	00000	0000000	00000
18 mm	1 1/2"	1 9/64"	Chrome-Plated Steel	Plastic	Buna-N Rubber	FDA Compliant 21 CFR 177.1630	0000000	00000	0000000	00000
24 mm	1 3/4"	1 25/64"	Chrome-Plated Steel	Plastic	Buna-N Rubber	FDA Compliant 21 CFR 177.1630	0000000	00000	0000000	00000