0.830"-14 Adapters | McMaster-Carr

Filter by

CGA Number

Connects To

Gender

For Use With

Fitting Type

System of Measurement

Thread Size

Thread Direction

Material

Maximum Pressure @ Temperature

Thread Type

Length

Fitting Connection

Tighten With

Shape

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

Yes

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

Maximum Temperature

REACH

RoHS

Compliant with Exemptions

Minimum Temperature

Finish

22 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.

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. Chrome-plated brass nuts have comparable corrosion and wear resistance to aluminum-plated brass nuts, and have a bright, shiny appearance. 316 stainless steel nuts have excellent corrosion resistance.

Nuts with a plastic grip can be tightened by hand instead of with a wrench.

Nuts with left-hand threads are identified with a notch.

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.

Female

Female Nut

Maximum Pressure: See table
Maximum Temperature: 120° F, except DIN 477 No. 9: 250° F

Brass
Number	Thread Size	Thread Type	Thread Direction	Max. Pressure	For Use With		Each
CGA 300	0.830"-14	NGO	Right Hand	500 psi @ 72° F	Ethyl Chloride	79215A651	00000
CGA 320	0.830"-14	NGO	Right Hand	3,000 psi @ 72° F	Carbon Dioxide	79215A653	0000
CGA 326	0.830"-14	NGO	Right Hand	3,000 psi @ 72° F	Nitrous Oxide	79215A672	0000
CGA 330	0.830"-14	NGO	Left Hand	3,000 psi @ 72° F	Boron Trifluoride, Carbonyl Sulfide, Hydrogen Bromide, Hydrogen Chloride, Hydrogen Iodide, Hydrogen Sulfide, Methyl Bromide, Silicon Tetrafluoride, Sulfur Tetrafluoride	79215A716	00000
CGA 346	0.830"-14	NGO	Right Hand	3,000 psi @ 72° F	Air	79215A655	0000
CGA 347	0.830"-14	NGO	Right Hand	4,700 psi @ 72° F	Air	79215A724	00000
CGA 350	0.830"-14	NGO	Left Hand	3,000 psi @ 72° F	Carbon Monoxide, Ethane, Ethylene, Hydrogen, Methane, Methyl Fluoride, Natural Gas	79215A666	0000
Brass with Plastic Grip
CGA 320	0.830"-14	NGO	Right Hand	3,000 psi @ 72° F	Carbon Dioxide	79215A428	00000
CGA 346	0.830"-14	NGO	Right Hand	3,000 psi @ 72° F	Air	79215A429	00000
Chrome-Plated Brass
CGA 320	0.830"-14	NGO	Right Hand	3,000 psi @ 72° F	Carbon Dioxide	79215A315	00000
CGA 326	0.830"-14	NGO	Right Hand	3,000 psi @ 72° F	Nitrous Oxide	4183N403	00000
CGA 346	0.830"-14	NGO	Right Hand	3,000 psi @ 72° F	Air	4183N404	00000
CGA 350	0.830"-14	NGO	Left Hand	3,000 psi @ 72° F	Carbon Monoxide, Ethane, Ethylene, Hydrogen, Methane, Methyl Fluoride, Natural Gas	79215A317	00000
316 Stainless Steel
CGA 330	0.830"-14	NGO	Left Hand	3,000 psi @ 72° F	Boron Trifluoride, Carbonyl Sulfide, Hydrogen Bromide, Hydrogen Chloride, Hydrogen Iodide, Hydrogen Sulfide, Methyl Bromide, Silicon Tetrafluoride, Sulfur Tetrafluoride	79215A733	00000

High-Pressure Threaded Fittings for Compressed Gas

Designed to handle high-pressure welding applications, these fittings are commonly used to connect pressure regulators to compressed gas tanks or cylinders. Fittings are also known as CGA (Compressed Gas Association) fittings. They are brass for good corrosion resistance.

Fittings with left-hand threads are identified with a notch in the nut.

Note: Fittings have a CGA number that corresponds to a specific type of gas. Choose a fitting with the same CGA number as your tank and other system components.

Female Tank × Female Regulator

Maximum Pressure: See table
Maximum Temperature: 120° F

CGA Number		Tank Connection			Regulator Connection
Tank	Regulator	Thread Size	Thread Type	Thread Direction	Thread Size	Thread Type	Thread Direction	Max. Pressure	For Use With		Each
Brass
300	510	0.830"-14	NGO	Right Hand	0.880"-14	NGO	Left Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethyl Chloride, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	7923A12	00000
320	580	0.830"-14	NGO	Right Hand	0.960"-14	NGO	Right Hand	3,000 psi @ 72° F	Argon, Carbon Dioxide, Helium, Krypton, Neon, Nitrogen, Xenon	7923A13	00000
346	580	0.830"-14	NGO	Right Hand	0.960"-14	NGO	Right Hand	3,000 psi @ 72° F	Air, Argon, Helium, Krypton, Neon, Nitrogen, Xenon	7923A19	00000
350	580	0.830"-14	NGO	Left Hand	0.960"-14	NGO	Right Hand	3,000 psi @ 72° F	Argon, Carbon Monoxide, Ethane, Ethylene, Helium, Hydrogen, Krypton, Methane, Methyl Fluoride, Natural Gas, Neon, Nitrogen, Xenon	7923A25	00000

Female Tank × Male Regulator

Maximum Pressure: See table
Maximum Temperature: 120° F

CGA Number		Tank Connection			Regulator Connection
Tank	Regulator	Thread Size	Thread Type	Thread Direction	Thread Size	Thread Type	Thread Direction	Max. Pressure	For Use With		Each
Brass
200	300	0.628"-14	NGO	Right Hand	0.830"-14	NGO	Right Hand	500 psi @ 72° F	Acetylene, Ethyl Chloride	7923A22	000000
346	540	0.830"-14	NGO	Right Hand	0.908"-14	NGO	Right Hand	3,000 psi @ 72° F	Air, Oxygen	7923A18	00000

Male Tank × Male Regulator

Maximum Pressure: See table
Maximum Temperature: 120° F

CGA Number		Tank Connection			Regulator Connection
Tank	Regulator	Thread Size	Thread Type	Thread Direction	Thread Size	Thread Type	Thread Direction	Max. Pressure	For Use With		Each
Brass
510	300	0.880"-14	NGO	Left Hand	0.830"-14	NGO	Right Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethyl Chloride, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	7923A11	000000
580	320	0.960"-14	NGO	Right Hand	0.830"-14	NGO	Right Hand	3,000 psi @ 72° F	Argon, Carbon Dioxide, Helium, Krypton, Neon, Nitrogen, Xenon	7923A32	00000