ASTM B43 Hose Fittings | McMaster-Carr

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14 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.

Brass fittings are softer than other metal fittings, so they’re easier to thread together. They have good 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

Brass
For Hose ID	Pipe Size	Body Shape	Max. Pressure	Max. Vacuum	Specifications Met		Each
1/2"	1/2	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM B43	5363K11	000000
3/4"	3/4	Hex	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM B43	5363K12	00000
1"	1	Hex	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM B43	5363K13	00000
1 1/4"	1 1/4	Hex	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM B43	5363K14	00000
1 1/2"	1 1/2	Hex	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM B43	5363K15	00000
2"	2	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM B43	5363K16	00000
2 1/2"	2 1/2	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM B43	5363K17	00000
3"	3	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM B43	5363K18	000000
4"	4	Round	125 psi @ 72° F	26 in. of Hg @ 72° F	ASME B1.20.1, ASTM B43	5363K19	000000

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

Brass
For Hose ID	Max. Pressure	Max. Vacuum	Specifications Met		Each
3/4"	125 psi @ 72° F	26 in. of Hg @ 72° F	ASTM B43	53605K41	000000
1"	125 psi @ 72° F	26 in. of Hg @ 72° F	ASTM B43	53605K42	00000
1 1/4"	125 psi @ 72° F	26 in. of Hg @ 72° F	ASTM B43	53605K43	00000
1 1/2"	125 psi @ 72° F	26 in. of Hg @ 72° F	ASTM B43	53605K44	00000
2"	125 psi @ 72° F	26 in. of Hg @ 72° F	ASTM B43	53605K45	00000