ASTM A320 Pipe Fittings | McMaster-Carr

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317 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.

Fitting Type

Bridge the gap between pipe with different fitting connections

295 products

Fitting Type

Reducing Adapter

Join pipe of different sizes and fitting connections

139 products

Bushing

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

31 products

Miniature Medium-Pressure Stainless Steel Threaded Pipe Fittings

When space is at a premium choose these compact fittings. Though small in size, they have the strength to handle medium-pressure applications. Fittings are stainless steel for very good corrosion resistance.

Straight Connectors

Male

303 Stainless Steel—Fittings have very good corrosion resistance.

			303 Stainless Steel
	Pipe Size	Body Shape	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Male



		1/16	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K332	000000


		1/8	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K335	00000
		1/4	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K336	00000

Straight Adapters

UN/UNF (SAE Straight) Thread—Also known as O-ring boss threads.

303 Stainless Steel—Fittings have very good corrosion resistance.

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.

				303 Stainless Steel				316 Stainless Steel
	Thread Size (A)	Pipe Size (B)	Body Shape	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
UN/UNF (SAE Straight) Female × NPT Male
Female x Male


		10-32	1/16	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K268	000000	—	—	———	0


		10-32	1/8	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K272	00000	—	—	———	0
		10-32	1/4	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K275	00000	—	—	———	0
		1/4"-28	1/16	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K323	00000	—	—	———	0
		1/4"-28	1/4	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K333	00000	—	—	———	0
		7/16"-20	1/8	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K448	00000	—	—	———	0
		7/16"-20	1/4	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K452	00000	—	—	———	0
		9/16"-18	1/8	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K436	00000	—	—	———	0
		9/16"-18	1/4	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K442	00000	—	—	———	0


		Metric Female × NPT Male
		Female x Male


				M5 × 0.8 mm	1/16	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K355	00000	500 psi @ 72° F	100 psi @ 350° F	8767N23	000000


				M5 × 0.8 mm	1/8	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K365	00000	500 psi @ 72° F	100 psi @ 350° F	8767N24	00000
				M5 × 0.8 mm	1/4	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K372	00000	500 psi @ 72° F	100 psi @ 350° F	8767N25	00000
				M6 × 1 mm	1/16	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K376	00000	—	—	———	0
				M6 × 1 mm	1/8	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K39	00000	—	—	———	0
				M6 × 1 mm	1/4	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K395	00000	—	—	———	0
				M8 × 1 mm	1/8	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K399	00000	—	—	———	0
				M8 × 1 mm	1/4	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K402	00000	—	—	———	0
				M10 × 1.25 mm	1/8	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K415	00000	—	—	———	0
				M10 × 1.25 mm	1/4	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K425	00000	—	—	———	0

Straight Adapters with Gasket


Female x Male	Male x Male

UN/UNF (SAE Straight) Thread—Also known as O-ring boss threads.

303 Stainless Steel—Fittings have very good corrosion resistance.

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

	Pipe Size		Thread Size				303 Stainless Steel				316 Stainless Steel
	(A)	(B)	(A)	(B)	Body Shape	Gasket Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Female × UN/UNF (SAE Straight) Male



		1/16	—	—	10-32	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K011	000000	—	—	———	0


		1/16	—	—	1/4"-28	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K035	00000	—	—	———	0
		1/8	—	—	10-32	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K19	00000	—	—	———	0
		1/8	—	—	1/4"-28	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K116	00000	—	—	———	0
		1/8	—	—	7/16"-20	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K133	00000	—	—	———	0
		1/8	—	—	9/16"-18	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K131	00000	—	—	———	0
		1/4	—	—	10-32	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K135	00000	—	—	———	0
		1/4	—	—	1/4"-28	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K143	00000	—	—	———	0
		1/4	—	—	7/16"-20	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K257	00000	—	—	———	0
		1/4	—	—	9/16"-18	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K236	00000	—	—	———	0


		NPT Female × Metric Male



				1/16	—	—	M3 × 0.5 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K042	00000	—	—	———	0


				1/16	—	—	M5 × 0.8 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K051	00000	500 psi @ 72° F	100 psi @ 350° F	8767N11	000000
				1/16	—	—	M6 × 1 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K052	00000	—	—	———	0
				1/16	—	—	M8 × 1 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K067	00000	—	—	———	0
				1/8	—	—	M3 × 0.5 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K117	00000	500 psi @ 72° F	100 psi @ 350° F	8767N13	00000
				1/8	—	—	M5 × 0.8 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K26	00000	500 psi @ 72° F	100 psi @ 350° F	8767N14	00000
				1/8	—	—	M6 × 1 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K27	00000	500 psi @ 72° F	100 psi @ 350° F	8767N15	00000
				1/8	—	—	M8 × 1 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K28	00000	500 psi @ 72° F	100 psi @ 350° F	8767N16	00000
				1/8	—	—	M10 × 1.25 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K128	00000	500 psi @ 72° F	100 psi @ 350° F	8767N17	00000
				1/4	—	—	M3 × 0.5 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K214	00000	—	—	———	0
				1/4	—	—	M5 × 0.8 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K221	00000	500 psi @ 72° F	100 psi @ 350° F	8767N18	00000


				1/4	—	—	M6 × 1 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K222	00000	500 psi @ 72° F	100 psi @ 350° F	8767N19	00000
				1/4	—	—	M8 × 1 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K224	00000	500 psi @ 72° F	100 psi @ 350° F	8767N21	00000
				1/4	—	—	M10 × 1.25 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K233	00000	500 psi @ 72° F	100 psi @ 350° F	8767N22	00000


				NPT Female × BSPP Male



						1/16	1/16	—	—	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K305	00000	—	—	———	0


						1/8	1/8	—	—	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K307	00000	500 psi @ 72° F	100 psi @ 350° F	8767N88	00000
						1/4	1/4	—	—	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K311	00000	500 psi @ 72° F	100 psi @ 350° F	8767N92	00000


						NPT Male × UN/UNF (SAE Straight) Male



								1/16	—	—	10-32	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K734	00000	—	—	———	0


								1/16	—	—	1/4"-28	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K736	00000	—	—	———	0
								1/8	—	—	10-32	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K796	00000	—	—	———	0
								1/8	—	—	1/4"-28	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K8	00000	—	—	———	0
								1/8	—	—	7/16"-20	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K892	00000	—	—	———	0
								1/8	—	—	9/16"-18	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K875	00000	—	—	———	0
1/4								—	—	10-32	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K907	00000	—	—	———	0
1/4	—							—	1/4"-28	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K909	00000	—	—	———	0
1/4	—							—	7/16"-20	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K993	00000	—	—	———	0
1/4	—							—	9/16"-18	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K991	00000	—	—	———	0


NPT Male × Metric Male



								1/16	—	—	M5 × 0.8 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K757	00000	500 psi @ 72° F	100 psi @ 350° F	8767N34	00000


								1/8	—	—	M5 × 0.8 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K831	00000	500 psi @ 72° F	100 psi @ 350° F	8767N36	00000
								1/8	—	—	M6 × 1 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K842	00000	—	—	———	0
								1/8	—	—	M8 × 1 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K853	00000	500 psi @ 72° F	100 psi @ 350° F	8767N38	00000
								1/8	—	—	M10 × 1.25 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K858	00000	500 psi @ 72° F	100 psi @ 350° F	8767N39	00000
								1/4	—	—	M5 × 0.8 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K952	00000	500 psi @ 72° F	100 psi @ 350° F	8767N41	00000
								1/4	—	—	M6 × 1 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K957	00000	500 psi @ 72° F	100 psi @ 350° F	8767N42	00000
		1/4						—	—	M8 × 1 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K959	00000	500 psi @ 72° F	100 psi @ 350° F	8767N43	00000
		1/4	—					—	M10 × 1.25 mm	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K974	00000	500 psi @ 72° F	100 psi @ 350° F	8767N44	00000


		NPT Male × BSPP Male



								1/8	1/8	—	—	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K324	00000	—	—	———	0


								1/4	1/4	—	—	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K328	00000	—	—	———	0


								Metric Female × UN/UNF (SAE Straight) Male



										—	—	M6 × 1 mm	10-32	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K29	00000	—	—	———	0

Straight Reducing Adapters

Female x Male

303 Stainless Steel—Fittings have very good corrosion resistance.

	Pipe Size					303 Stainless Steel		316 Stainless Steel
	(A)	(B)	Body Shape	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each		Each
NPT Female × NPT Male



		1/8	1/16	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K21	000000	8767N47	000000


		1/4	1/16	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K164	00000	8767N49	00000
		1/4	1/8	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K184	00000	8767N51	00000

Straight Reducing Adapters with Gasket


Female x Male	Male x Male

303 Stainless Steel—Fittings have very good corrosion resistance.

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

	Pipe Size				303 Stainless Steel				316 Stainless Steel
	(A)	(B)	Body Shape	Gasket Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Female × BSPP Male



		1/8	1/4	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K309	000000	—	—	———	0


		1/4	1/8	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K312	00000	500 psi @ 72° F	100 psi @ 350° F	8767N93	000000


		NPT Male × BSPP Male



				1/4	1/8	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K329	00000	—	—	———	0

Bushing Straight Reducing Adapters

Male x Female

UN/UNF (SAE Straight) Thread—Also known as O-ring boss threads.

303 Stainless Steel—Fittings have very good corrosion resistance.

	Pipe Size				303 Stainless Steel				316 Stainless Steel
	(A)	(B)	Thread Size (B)	Body Shape	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Male × UN/UNF (SAE Straight) Female



		1/16	—	10-32	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K34	000000	—	—	———	0


		1/8	—	10-32	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K35	00000	—	—	———	0
		1/8	—	1/4"-28	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K655	00000	—	—	———	0
		1/4	—	10-32	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K36	00000	—	—	———	0
		1/4	—	1/4"-28	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K684	00000	—	—	———	0


		NPT Male × NPT Female



				1/8	1/16	—	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K671	00000	500 psi @ 72° F	100 psi @ 350° F	8767N52	000000


				1/4	1/16	—	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K685	00000	500 psi @ 72° F	100 psi @ 350° F	8767N53	00000
				1/4	1/8	—	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K687	00000	500 psi @ 72° F	100 psi @ 350° F	8767N54	00000


				NPT Male × Metric Female



						1/16	—	M3 × 0.5 mm	Hex	—	—	———	0	500 psi @ 72° F	100 psi @ 350° F	8767N55	00000


						1/16	—	M5 × 0.8 mm	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K642	00000	—	—	———	0
						1/8	—	M3 × 0.5 mm	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K673	00000	—	—	———	0
						1/8	—	M5 × 0.8 mm	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K676	00000	500 psi @ 72° F	100 psi @ 350° F	8767N58	00000
						1/8	—	M6 × 1 mm	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K677	00000	500 psi @ 72° F	100 psi @ 350° F	8767N59	00000
						1/8	—	M8 × 1 mm	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K681	00000	—	—	———	0
						1/4	—	M3 × 0.5 mm	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K695	00000	—	—	———	0
						1/4	—	M5 × 0.8 mm	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K704	00000	500 psi @ 72° F	100 psi @ 350° F	8767N63	00000
						1/4	—	M6 × 1 mm	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K719	00000	500 psi @ 72° F	100 psi @ 350° F	8767N64	00000
						1/4	—	M8 × 1 mm	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K723	00000	500 psi @ 72° F	100 psi @ 350° F	8767N65	00000
						1/4	—	M10 × 1.25 mm	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K731	00000	—	—	———	0

Bushing Straight Reducing Adapters with Gasket

Male x Female

UN/UNF (SAE Straight) Thread—Also known as O-ring boss threads.

303 Stainless Steel—Fittings have very good corrosion resistance.

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

	Pipe Size		Thread Size				303 Stainless Steel
	(A)	(B)	(A)	(B)	Body Shape	Gasket Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
BSPP Male × NPT Female



		1/16	1/8	—	—	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K308	000000


		UN/UNF (SAE Straight) Male × UN/UNF (SAE Straight) Female



				—	—	1/4"-28	10-32	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K33	00000


				Metric Male × UN/UNF (SAE Straight) Female



						—	—	M6 × 1 mm	10-32	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K31	00000


						—	—	M8 × 1 mm	10-32	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K32	00000

Straight Reducers

Male x Male

303 Stainless Steel—Fittings have very good corrosion resistance.

	Pipe Size			303 Stainless Steel				316 Stainless Steel
	(A)	(B)	Body Shape	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Male × NPT Male



		1/8	1/16	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K807	000000	—	—	———	0


		1/4	1/16	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K742	00000	500 psi @ 72° F	100 psi @ 350° F	8767N68	000000
		1/4	1/8	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K818	00000	500 psi @ 72° F	100 psi @ 350° F	8767N69	00000

90° Elbow Adapters

Female x Male

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

UN/UNF (SAE Straight) Thread—Also known as O-ring boss threads.

303 Stainless Steel—Fittings have very good corrosion resistance.

	Pipe Size			303 Stainless Steel				316 Stainless Steel
	(A)	(B)	Thread Size (A)	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Female × NPT Male



		1/16	1/16	—	500 psi @ 72° F	100 psi @ 350° F	2684K47	000000	500 psi @ 72° F	100 psi @ 350° F	8767N71	000000


		1/8	1/8	—	500 psi @ 72° F	100 psi @ 350° F	2684K14	00000	500 psi @ 72° F	100 psi @ 350° F	8767N72	00000
		1/4	1/4	—	500 psi @ 72° F	100 psi @ 350° F	2684K587	00000	500 psi @ 72° F	100 psi @ 350° F	8767N73	00000


		UN/UNF (SAE Straight) Female × NPT Male



				—	1/8	10-32	500 psi @ 72° F	100 psi @ 350° F	2684K15	00000	—	—	———	0


				—	1/8	1/4"-28	500 psi @ 72° F	100 psi @ 350° F	2684K16	00000	—	—	———	0

90° Elbow Adapters with Gasket

Female x Male

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

UN/UNF (SAE Straight) Thread—Also known as O-ring boss threads.

303 Stainless Steel—Fittings have very good corrosion resistance.

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

	Pipe Size		Thread Size			303 Stainless Steel				316 Stainless Steel
	(A)	(B)	(A)	(B)	Gasket Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Female × UN/UNF (SAE Straight) Male



		1/16	—	—	10-32	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K46	000000	—	—	———	0


		1/16	—	—	1/4"-28	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K469	00000	—	—	———	0
		1/8	—	—	10-32	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K18	00000	—	—	———	0
		1/8	—	—	1/4"-28	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K522	00000	—	—	———	0
		1/4	—	—	10-32	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K576	00000	—	—	———	0
		1/4	—	—	1/4"-28	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K577	00000	—	—	———	0
		1/4	—	—	7/16"-20	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K635	00000	—	—	———	0
		1/4	—	—	9/16"-18	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K62	00000	—	—	———	0


		NPT Female × Metric Male



				1/16	—	—	M5 × 0.8 mm	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K483	00000	500 psi @ 72° F	100 psi @ 350° F	8767N74	000000


				1/16	—	—	M6 × 1 mm	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K494	00000	—	—	———	0
				1/8	—	—	M5 × 0.8 mm	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K23	00000	—	—	———	0
				1/8	—	—	M6 × 1 mm	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K534	00000	500 psi @ 72° F	100 psi @ 350° F	8767N75	00000
				1/8	—	—	M8 × 1 mm	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K24	00000	—	—	———	0
				1/8	—	—	M10 × 1.25 mm	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K562	00000	—	—	———	0
				1/4	—	—	M5 × 0.8 mm	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K596	00000	—	—	———	0
				1/4	—	—	M6 × 1 mm	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K6	00000	—	—	———	0
				1/4	—	—	M8 × 1 mm	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K606	00000	—	—	———	0
				1/4	—	—	M10 × 1.25 mm	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K619	00000	500 psi @ 72° F	100 psi @ 350° F	8767N78	00000


				NPT Female × BSPP Male



						1/8	1/8	—	—	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K315	00000	500 psi @ 72° F	100 psi @ 350° F	8767N96	00000


						1/4	1/4	—	—	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K318	00000	500 psi @ 72° F	100 psi @ 350° F	8767N99	00000


						UN/UNF (SAE Straight) Female × UN/UNF (SAE Straight) Male



								—	—	1/4"-28	1/4"-28	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K13	00000	—	—	———	0


								UN/UNF (SAE Straight) Female × Metric Male



										—	—	10-32	M5 × 0.8 mm	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K22	00000	—	—	———	0


										Metric Female × UN/UNF (SAE Straight) Male



												—	—	M6 × 1 mm	10-32	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K25	00000	—	—	———	0


Metric Female × Metric Male



												—	—	M3 × 0.5 mm	M3 × 0.5 mm	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K11	00000	—	—	———	0


												—	—	M5 × 0.8 mm	M5 × 0.8 mm	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K12	00000	—	—	———	0

90° Elbow Reducing Adapters

Female × Male

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

303 Stainless Steel—Fittings have very good corrosion resistance.

	Pipe Size		303 Stainless Steel				316 Stainless Steel
	(A)	(B)	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Female × NPT Male



		1/16	1/8	500 psi @ 72° F	100 psi @ 350° F	2684K17	000000	—	—	———	0


		1/8	1/16	500 psi @ 72° F	100 psi @ 350° F	2684K523	00000	500 psi @ 72° F	100 psi @ 350° F	8767N82	000000
		1/8	1/4	500 psi @ 72° F	100 psi @ 350° F	2684K524	00000	500 psi @ 72° F	100 psi @ 350° F	8767N83	00000
		1/4	1/16	500 psi @ 72° F	100 psi @ 350° F	2684K582	00000	500 psi @ 72° F	100 psi @ 350° F	8767N84	00000
		1/4	1/8	500 psi @ 72° F	100 psi @ 350° F	2684K585	00000	500 psi @ 72° F	100 psi @ 350° F	8767N85	00000

90° Elbow Reducing Adapters with Gasket

Female × Male

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

303 Stainless Steel—Fittings have very good corrosion resistance.

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

	Pipe Size			303 Stainless Steel
	(A)	(B)	Gasket Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Female × BSPP Male



		1/8	1/16	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K316	000000


		1/8	1/4	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K317	00000
		1/4	1/8	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K319	00000

External-Hex-Drive Plugs

Male, Threaded

Fitting

Connection, Hex

Body

303 Stainless Steel—Fittings have very good corrosion resistance.

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



		1/16	Hollow	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K331	00000	8767N113	000000


		BSPT Male



				1/16	Solid	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K339	0000	8767N114	00000


				1/8	Solid	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K341	00000	8767N115	00000
				1/4	Solid	Hex	500 psi @ 72° F	100 psi @ 350° F	2684K342	00000	8767N116	00000

External-Hex-Drive Plugs with Gasket

Threaded Fitting

Connection, Male,

Hex Body

303 Stainless Steel—Fittings have very good corrosion resistance.

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

					303 Stainless Steel				316 Stainless Steel
	Pipe Size	Construction	Body Shape	Gasket Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
BSPP Male



		1/16	Solid	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K301	000000	500 psi @ 72° F	100 psi @ 350° F	8767N109	000000


		1/8	Solid	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K302	00000	500 psi @ 72° F	100 psi @ 350° F	8767N111	00000
		1/4	Hollow	Hex	Fluoroelastomer	—	—	———	0	500 psi @ 72° F	100 psi @ 350° F	8767N122	00000
		1/4	Solid	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	2684K303	00000	—	—	———	0

Low-Pressure Stainless Steel Threaded Pipe Fittings

Use these fittings in a low-pressure pipe line.

Straight Adapters

	Pipe Size				316 Stainless Steel
	(A)	(B)	Pressure Class	Body Shape	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Female × BSPT Male
Female x Male


		1/16	1/16	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N126	000000


		1/8	1/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N127	00000
		1/4	1/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N128	00000
		3/8	3/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N129	00000
		1/2	1/2	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N131	00000
		3/4	3/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N132	00000
		1	1	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N133	00000


		BSPT Female × NPT Male
		Female x Male


				1/8	1/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N112	00000


				1/4	1/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N113	00000
				3/8	3/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N114	00000
				1/2	1/2	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N115	00000
				3/4	3/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N116	00000
				1	1	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N117	00000


				BSPP Female × NPT Male
				Female x Male


						1/16	1/16	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N118	00000


						1/8	1/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N119	00000
						1/4	1/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N121	00000
						3/8	3/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N122	00000
						1/2	1/2	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N123	00000
						3/4	3/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N124	00000
						1	1	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N125	00000

Straight Adapters with Gasket

Female x Male

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

	Pipe Size					316 Stainless Steel
	(A)	(B)	Pressure Class	Body Shape	Gasket Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Female × BSPP Male



		1/16	1/16	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N134	000000


		1/8	1/8	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N135	00000
		1/4	1/4	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N136	00000
		3/8	3/8	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N137	00000
		1/2	1/2	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N138	00000
		3/4	3/4	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N139	00000
		1	1	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N141	00000

Straight Reducing Adapters

	Pipe Size				316 Stainless Steel
	(A)	(B)	Pressure Class	Body Shape	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Female × BSPT Male
Female × Male


		1/16	1/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N235	000000


		1/8	1/16	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N242	00000
		1/8	1/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N243	00000
		1/8	3/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N244	00000
		1/4	1/16	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N248	00000
		1/4	1/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N249	00000
		1/4	3/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N251	00000
		1/4	1/2	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N252	00000
		1/4	3/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N253	00000
		3/8	1/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N256	00000
		3/8	1/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N257	00000


		3/8	1/2	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N258	00000
		1/2	1/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N264	00000
		1/2	3/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N265	00000
		1/2	3/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N266	00000
		1/2	1	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N267	00000
		3/4	3/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N272	00000
		3/4	1	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N274	00000
		1	1/2	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N279	00000
		1	3/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N281	00000


		BSPT Female × NPT Male
		Female × Male


				1/8	1/16	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N148	00000


				1/8	1/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N149	00000
				1/4	1/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N156	00000
				1/4	1/2	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N158	00000
				3/8	1/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N164	00000
				3/8	1/2	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N165	00000
				3/8	3/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N166	00000
				1/2	1/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N171	00000
				1/2	3/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N173	00000
				3/4	1/2	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N179	00000
				1	3/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N187	00000


				BSPP Female × NPT Male
				Female × Male


						1/8	1/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N196	00000


						1/8	3/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N197	00000
						1/4	1/16	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N202	00000
						1/4	1/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N203	00000
						1/4	3/8	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N204	00000
						1/4	1/2	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N205	00000
						1/4	3/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N206	00000
						3/8	1/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N211	00000
						3/8	1/2	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N212	00000
						3/8	3/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N213	00000
1/2						1/4	150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N217	00000


1/2	3/8					150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N218	00000
1/2	3/4					150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N219	00000
1/2	1					150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N221	00000
3/4	1/4					150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N224	00000
3/4	3/8					150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N225	00000
3/4	1/2					150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N226	00000
3/4	1					150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N227	00000
1	1/4					150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N231	00000
1	1/2					150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N233	00000
1	3/4					150	Hex	500 psi @ 72° F	100 psi @ 350° F	1456N234	00000

Straight Reducing Adapters with Gasket

Female x Male

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

	Pipe Size					316 Stainless Steel
	(A)	(B)	Pressure Class	Body Shape	Gasket Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Female × BSPP Male



		1/16	1/8	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N282	000000


		1/16	1/4	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N283	00000
		1/8	1/16	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N288	00000
		1/8	1/4	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N289	00000
		1/8	3/8	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N291	00000
		1/8	1/2	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N292	00000
		1/4	1/16	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N295	00000
		1/4	1/8	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N296	00000
		1/4	3/8	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N297	00000
		1/4	1/2	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N298	00000
		1/4	3/4	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N299	00000


		1/4	1	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N301	00000
		3/8	1/8	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N303	00000
		3/8	1/4	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N304	00000
		3/8	1/2	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N305	00000
		3/8	3/4	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N306	00000
		3/8	1	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N307	00000
		1/2	1/8	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N309	00000
		1/2	1/4	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N311	00000
		1/2	3/8	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N312	00000
		1/2	3/4	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N313	00000


		1/2	1	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N314	00000
		3/4	1/4	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N317	00000
		3/4	3/8	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N318	00000
		3/4	1/2	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N319	00000
		3/4	1	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N321	00000
		1	1/2	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N326	00000
		1	3/4	150	Hex	Fluoroelastomer	500 psi @ 72° F	100 psi @ 350° F	1456N327	00000

Locknuts

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

				316 Stainless Steel
	Pipe Size	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPSL Female



		1/8	300 psi @ 72° F	150 psi @ 350° F	4452K671	00000


		1/4	300 psi @ 72° F	150 psi @ 350° F	4452K672	0000
		3/8	300 psi @ 72° F	150 psi @ 350° F	4452K673	00000
		1/2	300 psi @ 72° F	150 psi @ 350° F	4452K674	00000
		3/4	300 psi @ 72° F	150 psi @ 350° F	4452K675	00000
		1	300 psi @ 72° F	150 psi @ 350° F	4452K676	00000