3/8 inch Brass AutoFlare Gas Coupling
129 Available At All US Supply Locations

3/8 Inch Brass AutoFlare Gas Coupling – CSST Connection Fitting
This 3/8 inch brass AutoFlare coupling is designed for use with corrugated stainless steel tubing (CSST) in fuel gas systems. It provides a secure, metal-to-metal, self-flaring connection between CSST and standard NPT-threaded gas system components. The fitting is suitable for both residential and commercial gas distribution applications, including natural gas and propane systems.
Specifications
- Size: 3/8 inch nominal CSST
- Connection: AutoFlare x Male NPT
- Material: Lead-free brass (compliant with ANSI/NSF 372)
- Sealing Method: Metal-to-metal flare seal – no gaskets or rubber O-rings
- Max Operating Pressure: As defined by manufacturer for use in ANSI LC 1-compliant CSST systems
Application and Compatibility
- ✅ System Type: Fuel gas (natural gas and propane)
- ✅ Use: Connection between CSST and black iron pipe, shut-off valves, manifolds, or appliances
- ✅ Standards: Complies with ANSI LC 1 / CSA 6.26 for CSST installations
- ✅ Installation Location: Indoor use only; follow manufacturer guidelines for protection and support
Installation Notes
Ensure CSST ends are cut cleanly using an approved cutting tool and properly deburred. Use only manufacturer-approved AutoFlare insert tools to form the internal flare. Tighten to torque specifications using appropriate wrenches on flats. Do not over-tighten. Confirm system leak integrity through pressure testing in accordance with local code and manufacturer instructions.
Use Case Examples
- Transition from CSST gas tubing to NPT appliance inlets
- Connecting gas manifolds in residential systems
- Adapting CSST to rigid black iron or steel piping near meters or regulators
Material Performance
Brass construction offers mechanical strength, corrosion resistance, and dimensional stability across a broad range of operating temperatures. AutoFlare fittings provide a sealed joint without the need for elastomeric components, making them suitable for high-integrity gas systems.
Specifications
| Weight | 0.270000 |
|---|---|
| Brand | TracPipe | CounterStrike |
| ADA Compliance | No |
| Disclaimer | OmegaFlex Tracpipe Products |
| Length (inches) | 0.95 |
| Width (inches) | 1.05 |
| Height (inches) | 1.8 |
| Side A | 3/8" |
| Side B | 3/8" |
| Fitting Type | Coupling |
| Item Type | Fittings |
| Manufacturer | Omega Flex |
| MPN | FGP-FST-375 |
| Material | Brass |
| Product Family | Fittings |
| Item Returns | This item can be returned |
