5/8 Pipe Size Tube Fittings

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150 psi @ 72° F

3,000 psi @ 72° F

4,000 psi @ 72° F

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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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.

Push-to-Connect Tube Fittings for Drinking Water

Temperature Range: 35° to 150° F
Tubing: See table
Specifications Met: NSF/ANSI 61

Made of moisture-resistant acetal, these fittings won't absorb water and lose strength, even in high-humidity environments. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting. All meet NSF/ANSI 61 for use in drinking water systems.

Straight Adapters, Tube × Female Threaded Pipe

						For Tube
For Tube OD	Pipe Size	Material	Color	Release Ring Color	Max. Pressure	Material		Each
BSPP Threads
10mm	5/8	Acetal Plastic	Black	Black	150 psi @ 72° F	Nylon Plastic, Polyethylene Plastic	5449K443	00000

30° Flared Fittings for Steel Tubing

Specifications Met: See table

Also known as JIS (Japanese Industrial Standard) fittings, these have a 30° flare on one or both ends. Fittings are zinc-plated steel for fair corrosion resistance.

Caps

Temperature Range: -65° to 500° F

For Tube OD	Pipe Size	Material	Max. Pressure	Specifications Met		Each
3/4"	5/8	Zinc-Plated Steel	4,000 psi @ 72° F	ISO 228-1, JIS B 0202, JIS B 8363	1774N108	000000

Plugs

Temperature Range: -65° to 500° F

For Tube OD	Pipe Size	Material	Max. Pressure	Specifications Met		Each
3/4"	5/8	Zinc-Plated Steel	4,000 psi @ 72° F	ISO 228-1, JIS B 0202, JIS B 8363	1774N102	000000

Nuts for High-Pressure Nipples for Compressed Gas

Slide a high-pressure hose nipple for compressed gas into one of these nuts to connect a pipe to the inlet of a pressure regulator. They are also known as CGA (Compressed Gas Association) nuts and inlet nuts.

Brass nuts have good corrosion resistance and are softer than 316 stainless steel nuts, so they're easier to thread together. Aluminum-plated brass nuts have better corrosion and wear resistance than unplated brass.

Note: Nuts have a CGA, BS, or DIN number that corresponds to a specific type of gas. Choose a nut with the same number as your tank and other system components.

Male

Male Nut

Maximum Pressure: See table
Maximum Temperature: 120° F, except DIN 477 No. 12: 250° F

Aluminum-Plated Brass
Number	Pipe Size	Thread Type	Thread Direction	Max. Pressure	For Use With		Each
BS 341 No. 3	5/8	BSPP	Right Hand	3,000 psi @ 72° F	Air, Argon, Helium, Krypton, Neon, Nitrogen, Oxygen, Perfluoropropane	79215A326	000000