SAE J531 Pipe Fittings | McMaster-Carr

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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Compliant with Exemptions

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2B999

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225 Products

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About Pipe and Fittings

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

Fitting Type

Bridge the gap between pipe with different fitting connections

96 products

Fitting Type

Reducing Adapter

Join pipe of different sizes and fitting connections

42 products

Bushing

Connect pipe of different sizes while taking up less space than reducers

31 products

High-Pressure Brass and Bronze Threaded Pipe Fittings with Sealant

The male threads have a sealant applied for extra leak protection in high-pressure systems. These fittings are brass or bronze, so they won't rust in damp environments.

Straight Adapters

Female x Male

	Pipe Size
	(A)	(B)	Lg.	Body Shape	Material	Max. Pressure @ Temp.		Each
NPT Female × NPT Male



		1/8	1/8	7/8"	Hex	Brass	1,000 psi @ 72° F	50785K251	00000


		1/4	1/4	1 1/4"	Hex	Brass	1,000 psi @ 72° F	50785K271	0000
		3/8	3/8	1 1/4"	Hex	Brass	1,000 psi @ 72° F	50785K618	0000
		1/2	1/2	1 21/32"	Hex	Brass	1,000 psi @ 72° F	50785K311	00000
		3/4	3/4	1 11/16"	Hex	Brass	1,000 psi @ 72° F	50785K299	00000

Straight Reducing Adapters

Female x Male

	Pipe Size
	(A)	(B)	Lg.	Body Shape	Material	Max. Pressure @ Temp.		Each
NPT Female × NPT Male



		1/4	1/8	1 1/16"	Hex	Brass	1,000 psi @ 72° F	50785K261	00000


		3/8	1/8	1 3/32"	Hex	Brass	1,000 psi @ 72° F	50785K613	00000
		3/8	1/4	1 1/4"	Hex	Brass	1,000 psi @ 72° F	50785K281	0000
		1/2	1/4	1 15/32"	Hex	Brass	1,000 psi @ 72° F	50785K615	00000
		1/2	3/8	1 15/32"	Hex	Brass	1,000 psi @ 72° F	50785K291	00000
		3/4	3/8	1 1/2"	Hex	Brass	1,000 psi @ 72° F	50785K927	00000
		3/4	1/2	1 11/16"	Hex	Brass	1,000 psi @ 72° F	50785K627	00000

Bushing Straight Reducing Adapters

Male x Female

	Pipe Size
	(A)	(B)	Lg.	Body Shape	Material	Max. Pressure @ Temp.		Each
NPT Male × NPT Female



		1/4	1/8	3/4"	Hex	Brass	1,000 psi @ 72° F	50785K611	00000


		3/8	1/8	3/4"	Hex	Brass	1,000 psi @ 72° F	50785K621	0000
		3/8	1/4	3/4"	Hex	Brass	1,000 psi @ 72° F	50785K631	0000
		1/2	1/8	1"	Hex	Brass	1,000 psi @ 72° F	50785K641	0000
		1/2	1/4	1"	Hex	Brass	1,000 psi @ 72° F	50785K919	0000
		1/2	3/8	1"	Hex	Brass	1,000 psi @ 72° F	50785K661	0000
		3/4	1/8	1"	Hex	Brass	1,000 psi @ 72° F	50785K671	00000
		3/4	1/4	1"	Hex	Brass	1,000 psi @ 72° F	50785K681	00000
		3/4	3/8	1"	Hex	Brass	1,000 psi @ 72° F	50785K691	00000
		3/4	1/2	1"	Hex	Brass	1,000 psi @ 72° F	50785K711	00000
		1	1/2	1 19/64"	Hex	Brass	1,000 psi @ 72° F	50785K926	00000


		1	3/4	1 19/64"	Hex	Brass	1,000 psi @ 72° F	50785K925	00000

Straight Reducers

Male x Female

	Pipe Size
	(A)	(B)	Lg.	Body Shape	Material	Max. Pressure @ Temp.		Each
NPT Male × NPT Male



		1/4	1/8	1 3/16"	Hex	Brass	1,000 psi @ 72° F	5485K312	00000


		3/8	1/8	1 7/32"	Hex	Brass	1,000 psi @ 72° F	5485K351	00000
		3/8	1/4	1 13/32"	Hex	Brass	1,000 psi @ 72° F	5485K321	0000
		1/2	1/4	1 5/8"	Hex	Brass	1,000 psi @ 72° F	5485K361	00000
		1/2	3/8	1 5/8"	Hex	Brass	1,000 psi @ 72° F	5485K331	00000
		3/4	1/2	1 51/64"	Hex	Brass	1,000 psi @ 72° F	5485K341	00000

90° Elbow Connectors

Male

	Body Shape	Material	Max. Pressure @ Temp.		Each
NPT Male



	1/8	Square	Brass	1,000 psi @ 72° F	50785K921	00000


	1/4	Square	Brass	1,000 psi @ 72° F	50785K922	00000
	3/8	Square	Brass	1,000 psi @ 72° F	50785K923	00000
	1/2	Square	Brass	1,000 psi @ 72° F	50785K924	00000

90° Elbow Adapters

Round Body

Female x male 90° elbow adapters are also known as street elbows.

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

	Pipe Size
	(A)	(B)	Body Shape	Material	Max. Pressure @ Temp.		Each
NPT Female × NPT Male



		1/8	1/8	Round	Brass	1,000 psi @ 72° F	50785K411	00000


		1/4	1/4	Round	Brass	1,000 psi @ 72° F	50785K431	0000
		3/8	3/8	Round	Brass	1,000 psi @ 72° F	50785K441	00000


		NPTF Female × NPTF Male



				1/2	1/2	Round	Brass	1,000 psi @ 72° F	50785K451	00000

90° Elbow Reducing Adapters

Female x Male

Female x male 90° elbow adapters are also known as street elbows.

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

	Pipe Size
	(A)	(B)	Body Shape	Material	Max. Pressure @ Temp.		Each
NPTF Female × NPTF Male



		1/4	1/8	Round	Brass	1,000 psi @ 72° F	50785K916	000000

45° Elbow Adapters

Female x Male

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

	Pipe Size
	(A)	(B)	Body Shape	Material	Max. Pressure @ Temp.		Each
NPTF Female × NPTF Male



		1/8	1/8	Hex	Brass	1,000 psi @ 72° F	50785K811	00000


		1/4	1/4	Hex	Brass	1,000 psi @ 72° F	50785K821	00000
		3/8	3/8	Hex	Brass	1,000 psi @ 72° F	50785K831	00000
		1/2	1/2	Hex	Brass	1,000 psi @ 72° F	50785K841	00000

Inline Tee Adapters

Female x Male x

Female

Inline tees are also known as branch tees.

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

	Pipe Size
	(A)	(B)	(C)	Body Shape	Material	Max. Pressure @ Temp.		Each
NPTF Female × NPTF Male × NPTF Female



		1/8	1/8	1/8	Hex	Brass	1,000 psi @ 72° F	50785K325	00000


		1/4	1/4	1/4	Hex	Brass	1,000 psi @ 72° F	50785K326	00000
		3/8	3/8	3/8	Hex	Brass	1,000 psi @ 72° F	50785K327	00000
		1/2	1/2	1/2	Hex	Brass	1,000 psi @ 72° F	50785K328	00000
		3/4	3/4	3/4	Hex	Brass	1,000 psi @ 72° F	50785K283	00000

High-Pressure Brass and Bronze Threaded Pipe Fittings

These fittings withstand high pressure in compressed air, water, oil, and natural gas lines. Made of brass, they won’t rust in damp environments.

Straight Connectors

Female

Male

	Lg.	Body Shape	Material	Max. Pressure @ Temp.		Each
BSPT Male



	1/8	3/4"	Hex	Brass	1,000 psi @ 72° F	50785K237	00000


	1/4	1 1/16"	Hex	Brass	1,000 psi @ 72° F	50785K277	0000
	3/8	1 3/32"	Hex	Brass	1,000 psi @ 72° F	50785K314	0000
	1/2	1 13/32"	Hex	Brass	1,000 psi @ 72° F	50785K33	00000
	3/4	1 9/16"	Hex	Brass	1,000 psi @ 72° F	50785K368	00000
	1	1 13/16"	Hex	Brass	1,000 psi @ 72° F	50785K385	00000


	BSPP Female



			1/8	11/16"	Hex	Brass	1,000 psi @ 72° F	50785K472	0000


			1/4	15/16"	Hex	Brass	1,000 psi @ 72° F	50785K474	0000
			3/8	1"	Hex	Brass	1,000 psi @ 72° F	50785K475	00000
			1/2	1 1/4"	Hex	Brass	1,000 psi @ 72° F	50785K476	00000
			3/4	1 3/8"	Hex	Brass	1,000 psi @ 72° F	50785K478	00000

Through-Wall Straight Connectors

Exploded View

Through-wall fittings are also known as bulkhead couplings; they mount through your wall or tank to create an inlet or outlet. When installing, the gasket should be on the inside of the wall.

	Thread Size	For Hole Dia.	Lg.	For Max. Wall Thk.	Body Shape	Material	Max. Pressure @ Temp.		Each
BSPP Female



	1/8	—	11/16"	23/32"	11/32"	Hex	Brass	1,000 psi @ 72° F	50785K103	000000


	1/4	—	13/16"	63/64"	37/64"	Hex	Brass	1,000 psi @ 72° F	50785K104	00000
	3/8	—	1 1/16"	1 1/32"	35/64"	Hex	Brass	1,000 psi @ 72° F	50785K118	00000
	1/2	—	1 1/8"	1 5/16"	25/32"	Hex	Brass	1,000 psi @ 72° F	50785K147	00000
	3/4	—	1 3/8"	1 27/64"	7/8"	Hex	Brass	1,000 psi @ 72° F	50785K149	00000
	1	—	1 11/16"	1 21/32"	61/64"	Hex	Brass	1,000 psi @ 72° F	50785K169	000000


	Metric Female



			—	M5 × 0.8 mm	7/16"	9/16"	17/64"	Hex	Brass	1,000 psi @ 72° F	50785K119	00000

Straight Adapters

Female x Male

Male x Male

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

	Pipe Size
	(A)	(B)	Lg.	Body Shape	Material	Max. Pressure @ Temp.		Each
NPTF Female × BSPT Male



		1/8	1/8	15/16"	Hex	Brass	1,000 psi @ 72° F	50785K827	00000


		1/4	1/4	1 11/32"	Hex	Brass	1,000 psi @ 72° F	50785K829	00000
		3/8	3/8	1 11/32"	Hex	Brass	1,000 psi @ 72° F	50785K832	00000
		1/2	1/2	1 3/4"	Hex	Brass	1,000 psi @ 72° F	50785K839	00000


		BSPT Male × NPT Male



				1/8	1/8	3/4"	Hex	Brass	1,000 psi @ 72° F	50785K238	00000


				1/4	1/4	1 1/16"	Hex	Brass	1,000 psi @ 72° F	50785K946	00000
				3/8	3/8	1 3/32"	Hex	Brass	1,000 psi @ 72° F	50785K315	00000
				1/2	1/2	1 13/32"	Hex	Brass	1,000 psi @ 72° F	50785K345	00000
				3/4	3/4	1 9/16"	Hex	Brass	1,000 psi @ 72° F	50785K369	00000


				BSPP Female × NPT Male



						1/8	1/8	25/32"	Hex	Brass	1,000 psi @ 72° F	50785K59	0000


						1/4	1/4	1 3/32"	Hex	Brass	1,000 psi @ 72° F	50785K601	00000
						3/8	3/8	1 1/8"	Hex	Brass	1,000 psi @ 72° F	50785K603	00000
						1/2	1/2	1 7/16"	Hex	Brass	1,000 psi @ 72° F	50785K608	00000
						3/4	3/4	1 1/2"	Hex	Brass	1,000 psi @ 72° F	50785K609	00000

Straight Adapters with Gasket

Female x Male

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

Fluoroelastomer—These gaskets resist a wide range of chemicals, including benzene, butyl alcohol, and ethylene glycol.

	Thread Size (B)	Lg.	Body Shape	Material	Max. Pressure @ Temp.	Gasket Material		Each
NPTF Female × Metric Male



	1/8	M10 × 1 mm	3/4"	Hex	Brass	1,000 psi @ 72° F	Fluoroelastomer	50785K844	000000


	1/8	M14 × 1.5 mm	29/32"	Hex	Brass	1,000 psi @ 72° F	Fluoroelastomer	50785K864	00000
	1/4	M12 × 1.5 mm	1 3/32"	Hex	Brass	1,000 psi @ 72° F	Fluoroelastomer	50785K868	00000
	1/4	M14 × 1.5 mm	1 3/32"	Hex	Brass	1,000 psi @ 72° F	Fluoroelastomer	50785K87	00000
	3/8	M16 × 1.5 mm	1 5/32"	Hex	Brass	1,000 psi @ 72° F	Fluoroelastomer	50785K908	00000
	3/8	M22 × 1.5 mm	1 1/16"	Hex	Brass	1,000 psi @ 72° F	Fluoroelastomer	50785K936	00000
	1/2	M27 × 2 mm	1 5/16"	Hex	Brass	1,000 psi @ 72° F	Fluoroelastomer	50785K944	00000

Straight Reducing Adapters with Gasket

Female x Male

	Pipe Size
	(A)	(B)	Lg.	Body Shape	Material	Max. Pressure @ Temp.	Gasket Material		Each
BSPP Female × BSPP Male



		1/4	1/8	13/16"	Hex	Brass	1,000 psi @ 72° F	Nylon	50785K747	00000


		3/8	1/4	1 1/32"	Hex	Brass	1,000 psi @ 72° F	Nylon	50785K755	00000
		1/2	3/8	1 1/8"	Hex	Brass	1,000 psi @ 72° F	Nylon	50785K761	00000

Bushing Straight Reducing Adapters

Male x Female

	Pipe Size
	(A)	(B)	Lg.	Body Shape	Material	Max. Pressure @ Temp.		Each
BSPT Male × BSPP Female



		1/4	1/8	5/8"	Hex	Brass	1,000 psi @ 72° F	50785K506	00000


		3/8	1/8	21/32"	Hex	Brass	1,000 psi @ 72° F	50785K509	0000
		3/8	1/4	21/32"	Hex	Brass	1,000 psi @ 72° F	50785K525	0000
		1/2	1/8	13/16"	Hex	Brass	1,000 psi @ 72° F	50785K526	00000
		1/2	1/4	13/16"	Hex	Brass	1,000 psi @ 72° F	50785K528	0000
		1/2	3/8	13/16"	Hex	Brass	1,000 psi @ 72° F	50785K55	0000
		3/4	1/4	15/16"	Hex	Brass	1,000 psi @ 72° F	50785K57	00000
		3/4	3/8	15/16"	Hex	Brass	1,000 psi @ 72° F	50785K58	00000
		3/4	1/2	15/16"	Hex	Brass	1,000 psi @ 72° F	50785K581	00000

Bushing Straight Reducing Adapters with Gasket

Male x Female

	Pipe Size
	(A)	(B)	Thread Size (B)	Lg.	Body Shape	Material	Max. Pressure @ Temp.	Gasket Material		Each
BSPP Male × Metric Female



		1/8	—	M5 × 0.8 mm	1/2"	Hex	Brass	1,000 psi @ 72° F	Polymer	50785K635	00000


		1/4	—	M5 × 0.8 mm	9/16"	Hex	Brass	1,000 psi @ 72° F	Polymer	50785K675	0000


		BSPP Male × BSPP Female



				1/4	1/8	—	9/16"	Hex	Brass	1,000 psi @ 72° F	Polymer	50785K644	0000


				3/8	1/8	—	19/32"	Hex	Brass	1,000 psi @ 72° F	Polymer	50785K676	0000
				3/8	1/4	—	19/32"	Hex	Brass	1,000 psi @ 72° F	Polymer	50785K677	0000
				1/2	1/8	—	13/16"	Hex	Brass	1,000 psi @ 72° F	Polymer	50785K683	00000
				1/2	1/4	—	13/16"	Hex	Brass	1,000 psi @ 72° F	Polymer	50785K684	00000
				1/2	3/8	—	13/16"	Hex	Brass	1,000 psi @ 72° F	Polymer	50785K685	0000
				3/4	1/4	—	29/32"	Hex	Brass	1,000 psi @ 72° F	Polymer	50785K692	00000
				3/4	1/2	—	29/32"	Hex	Brass	1,000 psi @ 72° F	Polymer	50785K745	00000

Straight Reducers

Male x Male

	Pipe Size
	(A)	(B)	Lg.	Body Shape	Material	Max. Pressure @ Temp.		Each
BSPT Male × BSPT Male



		1/4	1/8	15/16"	Hex	Brass	1,000 psi @ 72° F	50785K263	00000


		3/8	1/4	1 3/32"	Hex	Brass	1,000 psi @ 72° F	50785K307	0000
		1/2	3/8	1 19/32"	Hex	Brass	1,000 psi @ 72° F	50785K329	00000
		3/4	3/8	1 13/32"	Hex	Brass	1,000 psi @ 72° F	50785K351	00000

90° Elbow Connectors

Female

	Body Shape	Material	Max. Pressure @ Temp.		Each
BSPP Female



	1/4	Square	Brass	1,000 psi @ 72° F	50785K395	000000


	3/8	Square	Brass	1,000 psi @ 72° F	50785K398	00000

90° Elbow Adapters

Female x Male

Female x male 90° elbow adapters are also known as street elbows.

	Pipe Size
	(A)	(B)	Body Shape	Material	Max. Pressure @ Temp.		Each
BSPP Female × BSPT Male



		1/8	1/8	Square	Brass	1,000 psi @ 72° F	50785K409	000000


		1/4	1/4	Square	Brass	1,000 psi @ 72° F	50785K426	00000
		3/8	3/8	Square	Brass	1,000 psi @ 72° F	50785K429	00000

Tee Connectors

Female

	Lg.	Body Shape	Material	Max. Pressure @ Temp.		Each
BSPP Female



	1/8	1 25/32"	Square	Brass	1,000 psi @ 72° F	50785K438	000000


	1/4	2 3/32"	Square	Brass	1,000 psi @ 72° F	50785K439	00000
	3/8	2 7/16"	Square	Brass	1,000 psi @ 72° F	50785K444	00000
	1/2	3"	Square	Brass	1,000 psi @ 72° F	50785K454	00000

Inline Tee Adapters

Female x Male x

Female

Inline tees are also known as branch tees.

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

	Pipe Size
	(A)	(B)	(C)	Lg.	Body Shape	Material	Max. Pressure @ Temp.		Each
NPT Female × NPT Male × NPT Female



		1/8	1/8	1/8	—	Hex	Brass	1,000 psi @ 72° F	50785K321	00000


		1/4	1/4	1/4	—	Hex	Brass	1,000 psi @ 72° F	50785K322	00000
		3/8	3/8	3/8	—	Hex	Brass	1,000 psi @ 72° F	50785K323	00000
		1/2	1/2	1/2	—	Hex	Brass	1,000 psi @ 72° F	50785K324	00000


		NPTF Female × NPTF Male × NPTF Female



				3/4	3/4	3/4	—	Square	Brass	1,000 psi @ 72° F	50785K216	00000


				BSPP Female × BSPT Male × BSPP Female



						1/4	1/4	1/4	1 1/32"	Square	Brass	1,000 psi @ 72° F	50785K492	00000


						3/8	3/8	3/8	1 3/16"	Square	Brass	1,000 psi @ 72° F	50785K495	00000

Slotted-Drive Plugs with Gasket

Male

	Construction	Lg.	Body Shape	Material	Max. Pressure @ Temp.	Gasket Material		Each
Metric Male



	M5 × 0.8 mm	Hollow	11/32"	Hex	Brass	1,000 psi @ 72° F	Nylon	50785K824	00000

External-Hex-Drive Plugs with Gasket

Male

	Construction	Lg.	Body Shape	Material	Max. Pressure @ Temp.	Gasket Material		Each
BSPP Male



	1/8	Solid	1/2"	Hex	Brass	1,000 psi @ 72° F	Nylon	50785K812	00000


	1/4	Hollow	9/16"	Hex	Brass	1,000 psi @ 72° F	Nylon	50785K813	0000
	3/8	Hollow	21/32"	Hex	Brass	1,000 psi @ 72° F	Nylon	50785K823	00000
	1/2	Hollow	11/16"	Hex	Brass	1,000 psi @ 72° F	Nylon	50785K826	00000

External-Square-Drive Plugs

Male

	Construction	Lg.	Body Shape	Material	Max. Pressure @ Temp.		Each
BSPT Male



	1/8	Hollow	5/8"	Square	Brass	1,000 psi @ 72° F	50785K798	00000


	1/4	Hollow	23/32"	Square	Brass	1,000 psi @ 72° F	50785K8	00000
	3/8	Hollow	25/32"	Square	Brass	1,000 psi @ 72° F	50785K803	00000
	3/4	Hollow	1 3/32"	Square	Brass	1,000 psi @ 72° F	50785K806	00000

Locknuts

NPSL Thread—NPSL (National Pipe Straight Locknut) threads are compatible with NPT threads.

	Finished Material	Max. Pressure @ Temp.		Each
NPSL Female



	1/8	Brass	1,000 psi @ 72° F	50785K141	00000


	1/4	Brass	1,000 psi @ 72° F	50785K142	0000
	3/8	Brass	1,000 psi @ 72° F	50785K143	0000
	1/2	Brass	1,000 psi @ 72° F	50785K144	0000
	3/4	Brass	1,000 psi @ 72° F	50785K145	0000

Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

Commonly used in low-pressure water supply and utility piping systems, these galvanized fittings won't rust in wet and outdoor environments.

Hex-Drive Plugs

Male

	Pressure Class	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Male



	1/8	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K511	00000


	1/4	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K512	0000
	3/8	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K513	0000
	1/2	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K514	0000
	3/4	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K515	0000
	1	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K516	0000
	1 1/4	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K517	0000
	1 1/2	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K518	00000
	2	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K519	00000

Square-Drive Plugs

Male

	Construction	Pressure Class	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Male



	1/8	Solid	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K714	00000


	1/4	Solid	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K715	0000
	3/8	Solid	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K716	0000
	1/2	Solid	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K717	0000
	3/4	Solid	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K718	0000
	1	Solid	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K719	0000
	1 1/4	Solid	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K721	0000
	1 1/2	Solid	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K722	00000
	2	Solid	150	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K723	00000

External-Square-Drive Plugs

Male, Threaded

Fitting

Connection

	Construction	Pressure Class	Body Shape	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Male



	1/8	Solid	150	Square	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K821	00000


	1/4	Solid	150	Square	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K822	0000
	3/8	Solid	150	Square	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K823	0000
	1/2	Solid	150	Square	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K824	0000
	3/4	Solid	150	Square	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K825	0000
	1	Solid	150	Square	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K834	0000
	1 1/4	Solid	150	Square	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K835	00000
	1 1/2	Solid	150	Square	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K836	00000
	2	Solid	150	Square	Galvanized Steel	150 psi @ 72° F	150 psi @ 350° F	4638K837	00000

180° Bend Connectors

Image of Product. Front orientation. Pipe Traps. Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings.

180° bend connectors are also known as U-bends.

	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Certification	Shape		Each
NPT Female



	3/4	Galvanized Iron	150 psi @ 72° F	150 psi @ 350° F	UL Listed	180° Bend	4638K299	000000


	1	Galvanized Iron	150 psi @ 72° F	150 psi @ 350° F	UL Listed	180° Bend	4638K385	00000
	1 1/2	Galvanized Iron	150 psi @ 72° F	150 psi @ 350° F	UL Listed	180° Bend	4638K556	000000
	2	Galvanized Iron	150 psi @ 72° F	150 psi @ 350° F	UL Listed	180° Bend	4638K557	000000

Locknuts

NPSL Thread—NPSL (National Pipe Straight Locknut) threads are compatible with NPT threads.

	Finished Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPSL Female



	1/4	Galvanized Iron	Not Rated	Not Rated	4638K612	00000


	3/8	Galvanized Iron	Not Rated	Not Rated	4638K613	0000
	1/2	Galvanized Iron	Not Rated	Not Rated	4638K614	0000
	3/4	Galvanized Iron	Not Rated	Not Rated	4638K615	0000
	1	Galvanized Iron	Not Rated	Not Rated	4638K616	00000
	1 1/4	Galvanized Iron	Not Rated	Not Rated	4638K617	00000
	1 1/2	Galvanized Iron	Not Rated	Not Rated	4638K618	00000
	2	Galvanized Iron	Not Rated	Not Rated	4638K619	00000

Low-Pressure Iron and Steel Threaded Pipe Fittings with Sealant

To prevent leaks in low-pressure lines, the male threads on these fittings have an acrylic sealant already applied for extra protection. Also known as Pressure Class 125 or 150 fittings. Made of either iron or steel, they’re best in noncorrosive environments. Even with sealant, threaded connections can be taken apart for maintenance and repair.

Hex-Drive Plugs

NPT Male

	Construction	Pressure Class	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Male



	1/8	Solid	150	Steel	150 psi @ 72° F	Not Rated	5245N32	00000


	1/4	Solid	150	Steel	150 psi @ 72° F	Not Rated	5245N33	0000
	3/8	Solid	150	Steel	150 psi @ 72° F	Not Rated	5245N34	0000
	1/2	Solid	150	Steel	150 psi @ 72° F	Not Rated	5245N35	0000
	3/4	Solid	150	Steel	150 psi @ 72° F	Not Rated	5245N36	0000
	1	Solid	150	Steel	150 psi @ 72° F	Not Rated	5245N37	0000

Square-Drive Plugs

NPT Male

	Construction	Pressure Class	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Male



	1/2	Solid	150	Steel	150 psi @ 72° F	Not Rated	5245N42	00000


	3/4	Solid	150	Steel	150 psi @ 72° F	Not Rated	5245N43	0000
	1	Solid	150	Steel	150 psi @ 72° F	Not Rated	5245N44	0000

External-Square-Drive Plugs

NPT Male

	Construction	Pressure Class	Body Shape	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Male



	1/8	Solid	150	Square	Steel	150 psi @ 72° F	Not Rated	5245N26	00000


	1/4	Solid	150	Square	Steel	150 psi @ 72° F	Not Rated	5245N22	0000
	3/8	Solid	150	Square	Steel	150 psi @ 72° F	Not Rated	5245N23	0000
	1/2	Solid	150	Square	Steel	150 psi @ 72° F	Not Rated	5245N24	0000
	3/4	Solid	150	Square	Steel	150 psi @ 72° F	Not Rated	5245N25	0000
	1	Solid	150	Square	Steel	150 psi @ 72° F	Not Rated	5245N27	0000

Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings with Sealant

With sealant applied to the male threads, these fittings have extra leak protection. They’re made of galvanized iron or steel for rust resistance in wet and outdoor environments. Also known as Pressure Class 125 or 150 fittings, use in low-pressure applications.

Hex-Drive Plugs

NPTF Male

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

	Pressure Class	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPTF Male



	1/16	150	Galvanized Steel	Not Rated	Not Rated	1162T64	00000


	1/8	150	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T37	0000
	1/4	150	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T38	0000
	3/8	150	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T39	0000
	1/2	150	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T41	0000
	3/4	150	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T42	0000
	1	150	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T43	0000

Square-Drive Plugs

NPTF Male

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

	Construction	Pressure Class	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPTF Male



	1/8	Solid	150	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T44	00000


	1/4	Solid	150	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T45	0000
	3/8	Solid	150	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T46	0000
	1/2	Solid	150	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T47	0000
	3/4	Solid	150	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T48	0000
	1	Solid	150	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T49	0000

External-Hex-Drive Plugs

NPTF Male

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

	Construction	Pressure Class	Body Shape	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPTF Male



	1/8	Solid	150	Hex	Galvanized Steel	Not Rated	Not Rated	1162T57	00000


	1/4	Solid	150	Hex	Galvanized Steel	Not Rated	Not Rated	1162T58	0000
	3/8	Solid	150	Hex	Galvanized Steel	Not Rated	Not Rated	1162T59	0000
	1/2	Solid	150	Hex	Galvanized Steel	Not Rated	Not Rated	1162T61	0000
	3/4	Solid	150	Hex	Galvanized Steel	Not Rated	Not Rated	1162T62	0000
	1	Solid	150	Hex	Galvanized Steel	Not Rated	Not Rated	1162T63	0000

External-Square-Drive Plugs

NPTF Male

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

	Construction	Pressure Class	Body Shape	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPTF Male



	1/8	Solid	150	Square	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T31	00000


	1/4	Solid	150	Square	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T32	0000
	3/8	Solid	150	Square	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T33	0000
	1/2	Solid	150	Square	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T34	0000
	3/4	Solid	150	Square	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T35	0000
	1	Solid	150	Square	Galvanized Steel	150 psi @ 72° F	Not Rated	1162T36	0000

Low-Pressure Iron and Steel Threaded Pipe Fittings

An economical choice for low-pressure applications. Made of iron or steel, use these fittings in noncorrosive environments.

External-Square-Drive Plugs

Male

	Construction	Pressure Class	Body Shape	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Male



	1/8	Solid	Not Rated	Square	Steel	Not Rated	Not Rated	44605K921	00000

Premium Low-Pressure Stainless Steel Threaded Pipe Fittings

Unlike other stainless steel fittings, these are cast in the U.S. for superior quality. As another marker of quality, they come with a certificate with a traceable lot number and test report that guarantees material composition. All fittings except plugs adhere to ANSI/MSS SP-114 standards for heat treating, material thickness, and marking. It’s the highest quality standard for Pressure Class 150 low-pressure stainless steel fittings. They also meet either ASTM A351 or A479 requirements for parts that will be used in pressure systems. These stainless steel fittings are more corrosion resistant than steel fittings, and almost as strong.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

External-Hex-Drive Plugs

Male

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

316 Stainless Steel—Fittings are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel fittings, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.

					316 Stainless Steel
	Pipe Size	Construction	Pressure Class	Body Shape	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPTF Male



		1/4	Solid	150	Hex	270 psi @ 72° F	150 psi @ 350° F	5288N36	00000


		3/8	Solid	150	Hex	270 psi @ 72° F	150 psi @ 350° F	5288N37	0000