Sockolets | McMaster-Carr

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62 Products

About Pipe and Fittings

Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

High-Pressure Socket-Connect Steel Unthreaded Pipe Fittings

Socket-connect fittings are easier to weld than butt-weld fittings because the fitting doesn’t need to align perfectly to the pipe. Slide pipe into the socket and weld for a strong, permanent connection. Fittings have heavy duty construction that stands up to high-pressure applications. They are for use in noncorrosive environments.

Tee outlets allow you to create a tap anywhere along a pipe. They are also known as branch connectors and are comparable to Sockolet. To install, drill a hole in your pipe to match the fitting’s pipe size and weld in place.

Tee Outlets

For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
Specifications Met: ASME B31.1, ASME B31.3, ASTM A105, MSS SP-97, ASME B16.9, ASME B16.11
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 and 600 steel

Pipe Size	Dash Size	For Pipe Size	Ht.	Max. Pressure	Max. Steam Pressure	Material		Each
1/4	04	3/8 to 36	3/4"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K31	$14.58
3/8	06	3/8 to 1/2	7/8"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K92	24.61
3/8	06	3/4 to 36	7/8"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K32	14.58
1/2	08	3/4 to 36	1"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K33	13.86
3/4	12	1 1/2 to 36	1 1/8"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K34	14.06
3/4	12	3/4 to 1 1/4	1 1/8"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K94	14.06
1	16	1 1/4 to 2 1/2	1 3/8"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K75	15.59
1	16	1	1 3/8"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K95	31.83
1	16	3 to 36	1 3/8"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K35	15.59
1 1/4	20	1 1/4 to 1 1/2	1 3/8"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K96	26.04
1 1/4	20	2 to 3 1/2	1 3/8"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K76	26.04
1 1/4	20	4 to 36	1 3/8"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K36	26.04
1 1/2	24	6 to 36	1 3/8"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K37	26.04
1 1/2	24	1 1/2	1 3/8"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K97	27.27
1 1/2	24	2 to 2 1/2	1 3/8"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K77	26.04
1 1/2	24	3 to 5	1 3/8"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K87	26.04
2	32	4 to 6	1 1/2"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K381	29.60
2	32	8 to 36	1 1/2"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K88	29.60
2	32	2	1 1/2"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K98	36.08
2	32	2 1/2 to 3 1/2	1 1/2"	3,000 psi @ 72° F	300 psi @ 360° F	Steel	4587K78	29.60

High-Pressure Socket-Connect Stainless Steel Unthreaded Pipe Fittings

Forged for excellent strength, these heavy duty socket-connect fittings stand up to high-pressure applications. They are easier to weld than butt-weld fittings because the fitting doesn’t need to align perfectly to the pipe. Slide pipe into the socket and weld for a strong, permanent connection.

304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.

Tee outlets allow you to create a tap anywhere along a pipe. They are also known as branch connectors and are comparable to Weldolet. To install, drill a hole in your pipe to match the fitting’s pipe size and weld in place.

Tee Outlets

For Use With: Air, Natural Gas, Oil, Steam, Water
Specifications Met: ASTM A182
Pipe Nipples and Pipe: Use Schedule 80 stainless steel

304/304L Stainless Steel
Pipe Size	For Pipe Size	Height	Max. Pressure	Max. Steam Pressure		Each
Socket Connect × Butt Weld
1/4	1/4 to 3/8	3/4"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N11	$50.41
1/4	1/2 to 36	3/4"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N12	45.27
3/8	3/4 to 36	13/16"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N14	46.39
1/2	1/2	1"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N15	46.97
1/2	3/4 to 36	1"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N16	46.39
3/4	1 1/2 to 36	1 1/16"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N18	56.05
3/4	3/4 to 1 1/4	1 1/16"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N17	63.41
1	1 1/4 to 2 1/2	1 5/16"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N21	72.30
1	1	1 5/16"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N19	80.59
1	3 to 36	1 5/16"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N22	72.30
1 1/4	2 to 3 1/2	1 5/16"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N24	119.67
1 1/2	6 to 36	1 3/8"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N29	127.01
1 1/2	1 1/2	1 3/8"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N26	134.72
1 1/2	2 to 2 1/2	1 3/8"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N27	118.70
1 1/2	3 to 5	1 3/8"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N28	127.01
2	4 to 6	1 1/2"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N33	148.56
2	8 to 36	1 1/2"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N34	148.56
2	2	1 1/2"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N31	166.64
2	2 1/2 to 3 1/2	1 1/2"	2,900 psi @ 72° F	2,400 psi @ 212° F	1424N32	148.56
316/316L Stainless Steel
Socket Connect × Butt Weld
1/4	1/4 to 3/8	3/4"	2,900 psi @ 72° F	2,480 psi @ 212° F	1424N35	58.78
1/4	1/2 to 36	3/4"	2,900 psi @ 72° F	2,480 psi @ 212° F	1424N36	54.25
3/8	3/4 to 36	13/16"	2,900 psi @ 72° F	2,480 psi @ 212° F	1424N38	54.08
1/2	1/2	1"	2,900 psi @ 72° F	2,480 psi @ 212° F	1424N39	54.08
1/2	3/4 to 36	1"	2,900 psi @ 72° F	2,480 psi @ 212° F	1424N41	54.08
3/4	1 1/2 to 36	1 1/16"	2,900 psi @ 72° F	2,480 psi @ 212° F	1424N43	63.76
3/4	3/4 to 1 1/4	1 1/16"	2,900 psi @ 72° F	2,480 psi @ 212° F	1424N42	69.78
1	1 1/4 to 2 1/2	1 5/16"	2,900 psi @ 72° F	2,480 psi @ 212° F	1424N45	83.22
1	1	1 5/16"	2,900 psi @ 72° F	2,480 psi @ 212° F	1424N44	90.46
1	3 to 36	1 5/16"	2,900 psi @ 72° F	2,480 psi @ 212° F	1424N46	83.22
1 1/2	6 to 36	1 3/8"	2,900 psi @ 72° F	2,480 psi @ 212° F	1424N54	135.79
1 1/2	3 to 5	1 3/8"	2,900 psi @ 72° F	2,480 psi @ 212° F	1424N53	135.79
2	4 to 6	1 1/2"	2,900 psi @ 72° F	2,480 psi @ 212° F	1424N57	164.85
2	2	1 1/2"	2,900 psi @ 72° F	2,480 psi @ 212° F	1424N55	176.45
2	2 1/2 to 3 1/2	1 1/2"	2,900 psi @ 72° F	2,480 psi @ 212° F	1424N56	164.85

Standard-Wall Plastic Pipe Fittings for Water

Connect these fittings to Schedule 40 plastic pipe–they are the industry standard for residential and commercial low-pressure plumbing and water supply applications. They are plastic for good corrosion resistance.

Fittings for drinking water meet NSF/ANSI Standard 61.

Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a PVC primer and cement (also known as solvent weld).

To prevent leaks in threaded connections, apply a sealant to the male threads. Threaded connections can be taken apart as needed for maintenance and repair. For plastic threads, apply a non-hardening, plastic-compatible sealant. Tape or sealants with PTFE are not recommended for plastic-to-plastic connections. Fittings that meet ASTM D1784, ASTM D1785, and ASTM D4066 adhere to specifications and testing requirements for material quality.

Note: For fittings that are not rated for pressure, you can use the pressure rating of the plastic pipe as a reference. Threaded fittings are limited to 50% of the rated pressure of the pipe.

Warning: Never use plastic pipe fittings and pipe with compressed air or gas.

Tee Outlets, Female Threaded Pipe × Socket Connect

For Use With: Drinking Water, Water
Maximum Temperature: 140° F
Specifications Met: See table
Pipe Nipples and Pipe: Use Schedule 40 PVC Plastic
Flanges: Use Class 150 PVC Plastic

Tee outlets allow you to create additional outlets and connections in plastic pipe. Use a PVC primer and cement to secure the tee outlet into position, then drill a hole through the fitting and pipe. They are also known as branch connectors.

NPT Threads
Pipe Size	For Pipe Size	Material	Color	Specifications Met		Each
1/8	1/2	PVC Plastic	White	ASTM D1784, NSF/ANSI 61	4880K118	$1.34
1/8	3/4	PVC Plastic	White	ASTM D1784, NSF/ANSI 61	4880K119	1.58
1/2	1/2	PVC Plastic	White	ASTM D1784, NSF/ANSI 61	4880K116	1.34
1/2	3/4	PVC Plastic	White	ASTM D1784, NSF/ANSI 61	4880K105	2.15
1/2	1	PVC Plastic	White	ASTM D1784, NSF/ANSI 61	4880K106	3.87
3/4	3/4	PVC Plastic	White	ASTM D1784, NSF/ANSI 61	4880K104	2.49
3/4	1	PVC Plastic	White	ASTM D1784, NSF/ANSI 61	4880K107	3.87
1	1	PVC Plastic	White	ASTM D1784, NSF/ANSI 61	4880K117	3.88