ASTM A53 Hose Fittings | McMaster-Carr

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39 Products

About Measuring Fittings

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

Easy-Fit Barbed Hose Fittings for Air and Water

Low-profile barbs and a longer first barb allow for a smoother, easier installation than other barbed fittings. Slide the barbed end into rubber hose and secure with a clamp.

Zinc-plated steel fittings are stronger and more durable than other metal fittings. They have fair corrosion resistance. Fittings with a threaded end are also known as hose nipples.

Fittings with a hex body can be tightened with a wrench.

Hose connectors are also known as hose menders and splicers. Use them to connect lengths of hose or to repair damaged hose.

Straight Adapters, Hose × NPT Male Threaded Pipe

Straight Adapter with Hex Body

Straight Adapter with Round Body

Maximum Pressure: See table
Maximum Vacuum: See table
Temperature Range: -20° to 200° F
Attachment Type: Use Worm-Drive Clamps, Bolt Clamps, or Band-and-Buckle Clamps
Specifications Met: See table

Zinc-Plated Steel
For Hose ID	Pipe Size	Body Shape	Max. Pressure	Max. Vacuum	Specifications Met		Each
1/2"	1/2	Hex	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	5363K41	00000
3/4"	1/2	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	53555K11	00000
3/4"	3/4	Hex	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	5363K42	0000
3/4"	1	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	53555K31	00000
1"	3/4	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	53555K51	00000
1"	1	Hex	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	5363K43	0000
1"	1 1/4	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	53555K32	00000
1 1/4"	1	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	53555K52	00000
1 1/4"	1 1/4	Hex	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	5363K44	0000
1 1/4"	1 1/2	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	53555K33	00000
1 1/2"	1 1/4	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	53555K53	00000
1 1/2"	1 1/2	Hex	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	5363K45	00000
1 1/2"	2	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	53555K34	00000
2"	1 1/2	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	53555K54	00000
2"	2	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	5363K46	00000
2"	2 1/2	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	53555K35	00000
2 1/2"	2	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	53555K55	00000
2 1/2"	2 1/2	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	5363K47	00000
2 1/2"	3	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	53555K36	00000
3"	2 1/2	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	53555K56	00000
3"	3	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	5363K48	00000
3"	4	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	53555K37	000000
4"	3	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	53555K57	000000
4"	4	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM A53	5363K49	00000
5"	5	Round	100 psi @ 72° F	Not Rated	ASME B1.20.1, ASTM A53	5363K91	000000
6"	6	Round	100 psi @ 72° F	Not Rated	ASME B1.20.1, ASTM A53	5363K92	000000
8"	8	Round	100 psi @ 72° F	Not Rated	ASME B1.20.1, ASTM A53	5363K93	000000

Straight Adapters, Hose × BSPT Male Threaded Pipe

Straight Adapter with Round Body

Maximum Pressure: See table
Maximum Vacuum: See table
Temperature Range: See table
Attachment Type:
For 1/2" to 2" Hose IDs: Use Band-and-Buckle Clamps
For 2 1/2" to 4" Hose IDs: Use Worm-Drive Clamps, Bolt Clamps, or Band-and-Buckle Clamps
Specifications Met: See table

Zinc-Plated Steel
For Hose ID	Pipe Size	Body Shape	Max. Pressure	Max. Vacuum	Temp. Range, °F	Specifications Met		Each
2 1/2"	2 1/2	Round	75 psi @ 72° F	26 in. of Hg @ 72° F	-20° to 400°	ASTM A53	5332T11	000000
3"	3	Round	50 psi @ 72° F	26 in. of Hg @ 72° F	-20° to 400°	ASTM A53	5332T12	00000
4"	4	Round	50 psi @ 72° F	26 in. of Hg @ 72° F	-20° to 400°	ASTM A53	5332T13	00000

Straight Connectors, Hose

Maximum Pressure: See table
Maximum Vacuum: See table
Temperature Range: -20° to 200° F
Attachment Type:
For 1/2" to 4" Hose IDs: Use Worm-Drive Clamps, Bolt Clamps, or Band-and-Buckle Clamps
For 6" to 8" Hose IDs: Use Band-and-Buckle Clamps
Specifications Met: See table

Zinc-Plated Steel
For Hose ID	Max. Pressure	Max. Vacuum	Specifications Met		Each
1/2"	125 psi @ 72° F	26 in. of Hg @ 72° F	ASTM A53	53605K61	00000
3/4"	125 psi @ 72° F	26 in. of Hg @ 72° F	ASTM A53	53605K62	0000
1"	125 psi @ 72° F	26 in. of Hg @ 72° F	ASTM A53	53605K63	0000
1 1/4"	125 psi @ 72° F	26 in. of Hg @ 72° F	ASTM A53	53605K64	00000
1 1/2"	125 psi @ 72° F	26 in. of Hg @ 72° F	ASTM A53	53605K65	00000
2"	125 psi @ 72° F	26 in. of Hg @ 72° F	ASTM A53	53605K66	00000
2 1/2"	125 psi @ 72° F	26 in. of Hg @ 72° F	ASTM A53	53605K72	00000
3"	125 psi @ 72° F	26 in. of Hg @ 72° F	ASTM A53	53605K67	00000
4"	125 psi @ 72° F	26 in. of Hg @ 72° F	ASTM A53	53605K68	00000