AN816-12K Tube Fittings | McMaster-Carr

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4 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.

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.

316 stainless steel fittings have excellent corrosion resistance.

Straight Adapters, Tube × Male Threaded Pipe

316 Stainless Steel
For Tube OD	Pipe Size	Max. Pressure	Specifications Met		Each
ANPT Threads
3/4"	3/4	3,000 psi @ 72° F	AN816-12K, ASTM A380, SAE AS4841	5482K126	000000

Nuts

316 Stainless Steel
For Tube OD	Max. Pressure	Specifications Met		Each
3/4"	3,000 psi @ 72° F	AN818-12K, ASTM A380, SAE AS4841	5482K198	000000

Sleeves

316 Stainless Steel
For Tube OD	Max. Pressure	Specifications Met		Each
3/4"	3,000 psi @ 72° F	AN819-12K, ASTM A380, MS20819, SAE AS4841, SAE AS5176	5482K206	000000

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
3/4"	3/4	316 Stainless Steel	3,000 psi @ 72° F	ASTM A380, SAE AS9104/1, AN816-12K, SAE AS9100D	5482K287	000000

Nuts

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

Sleeves

For Tube OD	Sleeve Material	Max. Pressure	Specifications Met		Each
3/4"	316 Stainless Steel	3,000 psi @ 72° F	AN819-12K, ASTM A380, MS20819, SAE AS4841	5482K206	000000