3/8 inch x 3 inch Brass Nipple

3/8" x 3" Brass Pipe Nipple – Male Threaded Both Ends

The 3/8 inch x 3 inch Brass Nipple is a straight, externally threaded pipe fitting designed for use in a range of low to moderate pressure piping systems. Commonly specified in potable water, hydraulic, and HVAC installations, this nipple provides a reliable means of joining female-threaded components or extending pipe runs where corrosion resistance and mechanical integrity are required.

Performance Characteristics

Manufactured from lead-free brass, this component meets applicable standards for use in plumbing systems transporting potable water. Precision threading ensures compatibility with NPT-standard fittings, valves, and couplings.

• ✅ Thread Type: NPT (National Pipe Taper), Male x Male
• ✅ Material: Lead-free brass alloy for corrosion resistance and extended service life
• ✅ Working Pressure: Suitable for moderate-pressure systems when used with compatible components
• ✅ Compliance: Conforms to NSF/ANSI 61 and 372 requirements for potable water systems

Specifications

• Nominal Size: 3/8 inch
• Length: 3 inches
• Thread Type: MNPT x MNPT
• Finish: Machined brass, smooth bore

Typical Applications

This fitting is commonly used for inline connections in hot and cold water distribution systems, boiler piping, and general-purpose plumbing lines. Its brass composition makes it suitable for contact with a range of fluids and materials including copper, PEX (with appropriate adapters), and other metallic piping systems.

Installation Guidelines

Use PTFE tape or approved pipe joint compound on threads to ensure leak resistance. Avoid overtightening to prevent thread deformation or joint failure. Pipe ends must be inspected and cleaned before installation to ensure full thread engagement. Compatible with female-threaded brass, bronze, or steel fittings meeting NPT specifications.

Usage Note

Brass fittings offer excellent corrosion resistance and are commonly selected in environments subject to water exposure, temperature fluctuations, or mixed-metal systems. Lead-free brass is a requirement in potable water systems under current U.S. federal plumbing codes.

The 3/8" x 3" Brass Pipe Nipple is a versatile component for system assembly, repairs, and modifications—delivering a durable and code-compliant connection in both commercial and residential job sites.