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Hexagonal red brass locknut with internal threads

Value Brand

Value Brand 3/8" FNPT Red Brass Locknut

SKU CH-1Y1E-3W353

Red brass locknut with 3/8 inch FNPT threads rated for 125 psi and temperatures from -20 to 400 degrees F

  • TypeOther
  • Red brass resists corrosion for long service life
  • Class 125 rating handles 125 psi working pressure
  • Operates from -20 °F to 400 °F across hot and cold lines
  • Meets ANSI B1.20.1, ASME B16.15 and ASTM B584 standards
  • 3/8" FNPT threads connect directly to female pipe fittings

3/8" FNPT Red Brass Locknut

This 3/8 inch FNPT red brass locknut is a Class 125 pipe fitting built to ANSI B1.20.1, ASME B16.15 and ASTM B584 standards. It is designed for plumbing installations that require a secure threaded connection in residential or light commercial systems.

Suits installers needing a 125 psi rated brass

This fitting suits installers who need a 125 psi rated brass locknut with a temperature range of -20 to 400 degrees Fahrenheit. It is not for systems exceeding 125 psi or for applications requiring a different pipe size, connection type or material specification.

No bundled accessories or software

The product is supplied as a single locknut without additional accessories, software or sealing compounds. Installers must provide any required thread sealant, gaskets or mating fittings separately to complete the assembly.

Highlights

  • Red brass resists corrosion for long service life
  • Class 125 rating handles 125 psi working pressure
  • Operates from -20 °F to 400 °F across hot and cold lines
  • Meets ANSI B1.20.1, ASME B16.15 and ASTM B584 standards
  • 3/8" FNPT threads connect directly to female pipe fittings

Specifications

BrandZORO SELECT
TypeOther

Questions about this item

What size pipe fitting does this 3/8 inch FNPT red brass locknut connect to?

This locknut fits a 3/8 inch pipe fitting with FNPT threads, built to ANSI B1.20.1 and ASME B16.15 standards for Class 125 service.

Will this red brass locknut handle the same pressure and temperature range as my existing Class 125 brass fittings?

Yes, it is rated for 125 psi maximum pressure and a temperature range of -20 to 400 degrees F, matching Class 125 specifications.

How can I confirm the locknut meets the ASTM B584 standard after installation?

The locknut is manufactured to ASTM B584 for red brass material; proper thread engagement to ANSI B1.20.1 and a leak-free seal at up to 125 psi confirm correct assembly.

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