Asc Engineered Solutions 8700162400 Galvanized Lock Nut

Product Description

The ASC Engineered Solutions 8700162400 is a 1/4 inch malleable iron galvanized lock nut designed to secure threaded pipe fittings and prevent loosening under vibration or pressure. Manufactured from malleable iron and finished with a hot-dip galvanized coating per ASTM A-153, this lock nut resists corrosion in wet and outdoor installations. It conforms to ANSI B-16.3 dimensional standards and ANSI B-2.1 pipe thread specifications, making it a code-compliant choice for low-pressure piping systems. Plumbers and pipefitters install this fitting where a mechanical lock is needed on a threaded connection to maintain joint integrity over time.

This lock nut is suited for residential and light commercial plumbing, gas distribution, and mechanical piping systems where 1/4 inch NPT threaded connections are used. It is commonly installed on pipe runs requiring a secondary fastening point at fittings, valves, or bushings. The galvanized finish extends service life in damp or exposed environments. It is sold individually and is appropriate for new construction and retrofit work on ferrous pipe systems.

Key Features

• Malleable iron construction meets ASTM A-197 chemical and physical property requirements
• Hot-dip galvanized coating complies with ASTM A-153 for corrosion resistance
• Dimensional conformance to ANSI B-16.3 and ANSI B-16.4
• Pipe threads per ANSI B-2.1 for reliable NPT engagement
• Meets Federal Specification WW-P-521F and WW-P-471-B for ferrous pipe fittings and locknuts
• Lightweight at 0.03 pounds for easy handling during installation

Compatibility

Designed as an OEM-style replacement or new-install component for 1/4 inch NPT threaded ferrous piping systems in plumbing, mechanical, and gas distribution applications.

Installation Notes

Installation is performed by licensed plumbers or pipefitters working on threaded ferrous pipe systems. Shut off and depressurize the line before making or breaking any threaded connection. Apply appropriate thread sealant or PTFE tape per the applicable piping code before threading the lock nut onto the fitting. Reference IFGC or IPC requirements for gas and water piping applications respectively.

Technical Specifications

• Material: Malleable Iron
• Finish: Galvanized (ASTM A-153)
• Thread Size: 1/4 inch NPT
• Weight: 0.03 pounds
• Dimensional Standard: ANSI B-16.3, ANSI B-16.4
• Thread Standard: ANSI B-2.1
• Material Standard: ASTM A-197
• Federal Specifications: WW-P-521F, WW-P-471-B
• Sold As: Each

Standard Information

• Brand: ASC Engineered Solutions
• Manufacturer Part Number: 8700162400