ANPT Nipples | McMaster-Carr

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70 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.

Precision AN 37° Flared Fittings for Stainless Steel Tubing

For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil, Water
Temperature Range: -320° to 1200° F
Tubing: Use with seamless 304 or 316 stainless steel
Specifications Met: See table

The threads on the tube end of these fittings are Class 3A or 3B and adhere to tighter tolerances than other 37° flared fittings. They are made to exact AS (formerly AN) specifications and provide a tight metal-to-metal seal on tubing that is flared to 37°. Fittings require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.

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

Straight Adapters, Tube × Male Threaded Pipe

304 Stainless Steel
For Tube OD	Pipe Size	Max. Pressure	Specifications Met		Each
ANPT Threads
1/8"	1/8	3,000 psi @ 72° F	AN816-2J, ASTM A380, SAE AS4841	5482K11	000000
1/4"	1/8	3,000 psi @ 72° F	AN816-4J, ASTM A380, SAE AS4841	5482K111	00000
1/4"	1/4	3,000 psi @ 72° F	AN816-4-4J, ASTM A380, SAE AS4841	5482K12	00000
1/4"	1/2	3,000 psi @ 72° F	ASTM A380, SAE AS4841, SAE AS9100D, SAE AS9104/1	5482K112	00000
5/16"	1/4	3,000 psi @ 72° F	AN816-5-4J, ASTM A380, SAE AS4841	5482K502	00000
3/8"	1/4	3,000 psi @ 72° F	AN816-6J, ASTM A380, SAE AS4841	5482K113	00000
3/8"	3/8	3,000 psi @ 72° F	AN816-6-6J, ASTM A380, SAE AS4841	5482K15	00000
1/2"	1/4	3,000 psi @ 72° F	AN816-7J, ASTM A380, SAE AS4841	5482K503	00000
1/2"	3/8	3,000 psi @ 72° F	AN816-8J, ASTM A380, SAE AS4841	5482K114	00000
1/2"	1/2	3,000 psi @ 72° F	ASTM A380, SAE AS4841, SAE AS9100D, SAE AS9104/1	5482K18	00000
1/2"	3/4	3,000 psi @ 72° F	ASTM A380, SAE AS4841, SAE AS9100D, SAE AS9104/1	5482K504	00000
5/8"	1/2	3,000 psi @ 72° F	AN816-10J, ASTM A380, SAE AS4841	5482K505	00000
3/4"	1/2	3,000 psi @ 72° F	AN816-12-8J, ASTM A380, SAE AS4841	5482K506	00000
3/4"	3/4	3,000 psi @ 72° F	AN816-12J, ASTM A380, SAE AS4841	5482K21	00000
1"	1	3,000 psi @ 72° F	AN816-16J, ASTM A380, SAE AS4841	5482K116	00000
316 Stainless Steel
ANPT Threads
1/8"	1/8	3,000 psi @ 72° F	AN816-2K, ASTM A380, SAE AS4841	5482K117	00000
1/4"	1/8	3,000 psi @ 72° F	AN816-4K, ASTM A380, SAE AS4841	5482K119	00000
1/4"	1/4	3,000 psi @ 72° F	AN816-4-4K, ASTM A380, SAE AS4841	5482K118	00000
1/4"	3/8	3,000 psi @ 72° F	ASTM A380, SAE AS4841, SAE AS9100D, SAE AS9104/1	5482K507	00000
1/4"	1/2	3,000 psi @ 72° F	ASTM A380, SAE AS4841, SAE AS9100D, SAE AS9104/1	5482K121	00000
3/8"	1/4	3,000 psi @ 72° F	AN816-6K, ASTM A380, SAE AS4841	5482K123	00000
3/8"	3/8	3,000 psi @ 72° F	AN816-6-6K, ASTM A380, SAE AS4841	5482K122	00000
1/2"	1/4	3,000 psi @ 72° F	AN816-7K, ASTM A380, SAE AS4841	5482K508	00000
1/2"	3/8	3,000 psi @ 72° F	AN816-8K, ASTM A380, SAE AS4841	5482K124	00000
1/2"	1/2	3,000 psi @ 72° F	ASTM A380, SAE AS4841, SAE AS9100D, SAE AS9104/1	5482K125	00000
1/2"	3/4	3,000 psi @ 72° F	ASTM A380, SAE AS4841, SAE AS9100D, SAE AS9104/1	5482K509	00000
5/8"	1/2	3,000 psi @ 72° F	AN816-10K, ASTM A380, SAE AS4841	5482K511	00000
3/4"	1/2	3,000 psi @ 72° F	AN816-12-8K, ASTM A380, SAE AS4841	5482K512	00000
3/4"	3/4	3,000 psi @ 72° F	AN816-12K, ASTM A380, SAE AS4841	5482K126	00000
1"	1	3,000 psi @ 72° F	AN816-16K, ASTM A380, SAE AS4841	5482K127	00000

Straight Adapters, Tube × Female Threaded Pipe

316 Stainless Steel
For Tube OD	Pipe Size	Max. Pressure	Specifications Met		Each
ANPT Threads
1/4"	1/8	3,000 psi @ 72° F	ASTM A380, SAE AS4841, SAE AS9100D, SAE AS9104/1, MS51503B-4S	5482K513	000000
1/4"	1/4	3,000 psi @ 72° F	ASTM A380, SAE AS4841, SAE AS9100D, SAE AS9104/1, MS51503B-4-4S	5482K514	00000
3/8"	1/4	3,000 psi @ 72° F	ASTM A380, SAE AS4841, SAE AS9100D, SAE AS9104/1, MS51503B-6S	5482K515	00000
3/8"	3/8	3,000 psi @ 72° F	ASTM A380, SAE AS4841, SAE AS9100D, SAE AS9104/1, MS51503B-6-6S	5482K516	000000
1/2"	3/8	3,000 psi @ 72° F	ASTM A380, SAE AS4841, SAE AS9100D, SAE AS9104/1, MS51503B-8S	5482K517	000000
1/2"	1/2	3,000 psi @ 72° F	ASTM A380, SAE AS4841, SAE AS9100D, SAE AS9104/1, MS51503B-8-8S	5482K518	00000
3/4"	3/4	3,000 psi @ 72° F	ASTM A380, SAE AS4841, SAE AS9100D, SAE AS9104/1, MS51503B-12S	5482K519	00000
1"	1	3,000 psi @ 72° F	ASTM A380, SAE AS4841, SAE AS9100D, SAE AS9104/1, MS51503B-16S	5482K521	000000

Nuts

304 Stainless Steel
For Tube OD	Max. Pressure	Specifications Met		Each
1/4"	3,000 psi @ 72° F	AN818-4J, ASTM A380, SAE AS4841	5482K75	000000
5/16"	3,000 psi @ 72° F	AN818-5J, ASTM A380, SAE AS4841	5482K451	00000
3/8"	3,000 psi @ 72° F	AN818-6J, ASTM A380, SAE AS4841	5482K76	0000
1/2"	3,000 psi @ 72° F	AN818-8J, ASTM A380, SAE AS4841	5482K77	00000
5/8"	3,000 psi @ 72° F	AN818-10J, ASTM A380, SAE AS4841	5482K452	00000
3/4"	3,000 psi @ 72° F	AN818-12J, ASTM A380, SAE AS4841	5482K78	00000
1"	3,000 psi @ 72° F	AN818-16J, ASTM A380, SAE AS4841	5482K193	00000
316 Stainless Steel
1/8"	3,000 psi @ 72° F	AN818-2K, ASTM A380, SAE AS4841	5482K194	00000
1/4"	3,000 psi @ 72° F	AN818-4K, ASTM A380, SAE AS4841	5482K195	00000
3/8"	3,000 psi @ 72° F	AN818-6K, ASTM A380, SAE AS4841	5482K196	00000
1/2"	3,000 psi @ 72° F	AN818-8K, ASTM A380, SAE AS4841	5482K197	00000
5/8"	3,000 psi @ 72° F	AN818-10K, ASTM A380, SAE AS4841	5482K454	00000
3/4"	3,000 psi @ 72° F	AN818-12K, ASTM A380, SAE AS4841	5482K198	00000
1"	3,000 psi @ 72° F	AN818-16K, ASTM A380, SAE AS4841	5482K199	00000

Sleeves

304 Stainless Steel
For Tube OD	Max. Pressure	Specifications Met		Each
1/4"	3,000 psi @ 72° F	AN819-4J, ASTM A380, MS20819, SAE AS4841, SAE AS5176	5482K82	00000
5/16"	3,000 psi @ 72° F	AN819-5J, ASTM A380, MS20819, SAE AS4841, SAE AS5176	5482K561	0000
3/8"	3,000 psi @ 72° F	AN819-6J, ASTM A380, MS20819, SAE AS4841, SAE AS5176	5482K83	0000
1/2"	3,000 psi @ 72° F	AN819-8J, ASTM A380, MS20819, SAE AS4841, SAE AS5176	5482K84	0000
5/8"	3,000 psi @ 72° F	AN819-10J, ASTM A380, MS20819, SAE AS4841, SAE AS5176	5482K562	0000
3/4"	3,000 psi @ 72° F	AN819-12J, ASTM A380, MS20819, SAE AS4841, SAE AS5176	5482K85	00000
1"	3,000 psi @ 72° F	AN819-16J, ASTM A380, MS20819, SAE AS4841, SAE AS5176	5482K201	00000
316 Stainless Steel
1/8"	3,000 psi @ 72° F	AN819-2K, ASTM A380, MS20819, SAE AS4841, SAE AS5176	5482K202	0000
1/4"	3,000 psi @ 72° F	AN819-4K, ASTM A380, MS20819, SAE AS4841, SAE AS5176	5482K203	0000
3/8"	3,000 psi @ 72° F	AN819-6K, ASTM A380, MS20819, SAE AS4841, SAE AS5176	5482K204	00000
1/2"	3,000 psi @ 72° F	AN819-8K, ASTM A380, MS20819, SAE AS4841, SAE AS5176	5482K205	00000
5/8"	3,000 psi @ 72° F	AN819-10K, ASTM A380, MS20819, SAE AS4841, SAE AS5176	5482K564	00000
3/4"	3,000 psi @ 72° F	AN819-12K, ASTM A380, MS20819, SAE AS4841, SAE AS5176	5482K206	00000
1"	3,000 psi @ 72° F	AN819-16K, ASTM A380, MS20819, SAE AS4841, SAE AS5176	5482K207	00000

Vibration-Resistant Precision AN 37° Flared Fittings for Stainless Steel Tubing

For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil, Water
Temperature Range: -320° to 500° F
Tubing: Use with seamless 304 or 316 stainless steel
Specifications Met: See Table

A PTFE seal on the tube end of these fittings allows for an extra-strong connection in high-vibration applications. The threads on the tube end are Class 3A and adhere to tighter tolerances than other 37° flared fittings. They are made to exact AS (formerly AN) specifications and provide a tight metal-to-metal seal on tubing that is flared to 37°. Fittings are 316 stainless steel for excellent corrosion resistance. They require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.

Straight Adapters, Tube × Male Threaded Pipe

PTFE Seal

ANPT Threads
For Tube OD	Pipe Size	Material	Max. Pressure	Specifications Met		Each
1/4"	1/4	316 Stainless Steel	3,000 psi @ 72° F	ASTM A380, SAE AS9104/1, AN816-4-4K, SAE AS9100D	5482K284	000000
3/8"	3/8	316 Stainless Steel	3,000 psi @ 72° F	ASTM A380, SAE AS9104/1, AN816-6-6K, SAE AS9100D	5482K285	00000
1/2"	1/2	316 Stainless Steel	3,000 psi @ 72° F	ASTM A380, SAE AS9104/1, SAE AS9100D	5482K286	00000
3/4"	3/4	316 Stainless Steel	3,000 psi @ 72° F	ASTM A380, SAE AS9104/1, AN816-12K, SAE AS9100D	5482K287	00000

Nuts

For Tube OD	Nut Material	Max. Pressure	Specifications Met		Each
1/4"	316 Stainless Steel	3,000 psi @ 72° F	AN818-4K, ASTM A380, SAE AS4841	5482K195	000000
3/8"	316 Stainless Steel	3,000 psi @ 72° F	AN818-6K, ASTM A380, SAE AS4841	5482K196	00000
1/2"	316 Stainless Steel	3,000 psi @ 72° F	AN818-8K, ASTM A380, SAE AS4841	5482K197	00000
3/4"	316 Stainless Steel	3,000 psi @ 72° F	AN818-12K, ASTM A380, SAE AS4841	5482K198	00000

Sleeves

For Tube OD	Sleeve Material	Max. Pressure	Specifications Met		Each
1/4"	316 Stainless Steel	3,000 psi @ 72° F	AN819-4K, ASTM A380, MS20819, SAE AS4841	5482K203	00000
3/8"	316 Stainless Steel	3,000 psi @ 72° F	AN819-6K, ASTM A380, MS20819, SAE AS4841	5482K204	00000
1/2"	316 Stainless Steel	3,000 psi @ 72° F	AN819-8K, ASTM A380, MS20819, SAE AS4841	5482K205	00000
3/4"	316 Stainless Steel	3,000 psi @ 72° F	AN819-12K, ASTM A380, MS20819, SAE AS4841	5482K206	00000