PEX Connectors | McMaster-Carr

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20 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

Temperature Range: 32° to 180° F
Tubing:
All Fittings: Use with hard polyethylene plastic
Socket-Connect Fittings: Use with hard polyethylene plastic or copper
Specifications Met: See table

Connect these fittings to tubing with a ring and a crimping tool (both sold separately). They have multiple barbs that grip onto tubing for a secure hold. Fittings are compatible with Viega PEX tubing. Safe to use with drinking water, these fittings meet the strict standards of NSF/ANSI 61.

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

Straight Connectors, Tube

For Tube ID	Material	Max. Pressure	Specifications Met		Each
3/8"	PPSU	160 psi @ 72° F	ASTM F2159, NSF/ANSI 61	00000000	00000
1/2"	PPSU	160 psi @ 72° F	ASTM F2159, NSF/ANSI 61	00000000	000
3/4"	PPSU	160 psi @ 72° F	ASTM F2159, NSF/ANSI 61	00000000	0000
1"	PPSU	160 psi @ 72° F	ASTM F2159, NSF/ANSI 61	00000000	0000

90° Elbow Connectors, Tube

For Tube ID	Material	Max. Pressure	Specifications Met		Each
3/8"	PPSU	160 psi @ 72° F	ASTM F2159, NSF/ANSI 61	00000000	00000
1/2"	PPSU	160 psi @ 72° F	ASTM F2159, NSF/ANSI 61	00000000	0000
3/4"	PPSU	160 psi @ 72° F	ASTM F2159, NSF/ANSI 61	00000000	0000
1"	PPSU	160 psi @ 72° F	ASTM F2159, NSF/ANSI 61	00000000	0000

Tee Connectors, Tube

For Tube ID	Material	Max. Pressure	Specifications Met		Each
3/8"	PPSU	160 psi @ 72° F	ASTM F2159, NSF/ANSI 61	00000000	00000
1/2"	PPSU	160 psi @ 72° F	ASTM F2159, NSF/ANSI 61	00000000	0000
3/4"	PPSU	160 psi @ 72° F	ASTM F2159, NSF/ANSI 61	00000000	0000
1"	PPSU	160 psi @ 72° F	ASTM F2159, NSF/ANSI 61	00000000	0000

Crimping Tools

Crimping Tool

For Tube ID	Material		Each
3/8"	Steel	0000000	0000000
1/2"	Steel	0000000	000000
3/4"	Steel	0000000	000000
1"	Steel	00000000	000000

Crimping Rings

For Tube ID	Material	Pkg. Qty.		Pkg.
3/8"	Copper	5	0000000	00000
1/2"	Copper	5	0000000	0000
3/4"	Copper	5	0000000	0000
1"	Copper	5	0000000	0000

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How to Identify and Measure Fittings

Barbed Tube Fittings for Drinking Water