3/8 inch x Close Galvanized Steel Nipple

3/8" x Close Galvanized Steel Pipe Nipple – Threaded Fitting for Industrial and Commercial Use

The 3/8" x Close Galvanized Steel Nipple is a straight-threaded pipe fitting designed to connect two female threaded components in fluid or gas distribution systems. Manufactured from carbon steel and hot-dip galvanized to ASTM A153 or equivalent, this nipple provides corrosion resistance and structural integrity in pressurized plumbing, mechanical, and industrial applications.

This fitting features NPT (National Pipe Taper) male threads on both ends and a close length, meaning minimal visible space between ends once fully threaded. It is commonly installed in water, air, oil, or steam systems where a compact and rigid connection is needed between sections of pipe or valves.

Technical Specifications

• Nominal Size: 3/8 inch
• Length: Close (approx. 7/8" overall, thread to thread)
• Material: Carbon steel, hot-dip galvanized
• Thread Type: NPT, ANSI B1.20.1 standard
• Pressure Rating: Meets or exceeds ANSI/ASME B31.3 requirements when installed correctly
• Standard Compliance: ASTM A733 (dimensions), ASTM A53 or equivalent base material

Applications

Used in low- to moderate-pressure piping systems including water supply, compressed air, fire protection loops, industrial fluid lines, and mechanical pipe assemblies. Suitable for indoor and outdoor use when exposure to moisture is present, provided thread sealants are applied appropriately.

Installation Considerations

Installation requires proper threading engagement and the use of thread sealant tape or pipe dope to ensure leak prevention. Due to the close length, thread overlap will be nearly complete, which may require wrench-tightening both sides simultaneously. This fitting is not intended for repeated disassembly or flexible service lines.

Additional Notes

Galvanized pipe nipples are not recommended for use with natural gas in jurisdictions that restrict zinc-lined piping. Always consult local codes and specifications before installation. Use in systems carrying potable water requires verification of lead-free compliance where applicable.

The 3/8" x Close Galvanized Steel Nipple is engineered for reliability in demanding environments, delivering rigid, leak-resistant connections for commercial and industrial systems.