Midland Industries 44705LFUSA Hex Locknut 1 in Npsl Bronze

Product Description

The MIDLAND INDUSTRIES 44705LFUSA is a 1-inch NPSL hex locknut manufactured from lead-free bronze, designed to secure threaded fittings and piping connections in demanding service environments. With a 1-1/2-inch hex profile, this locknut provides a solid wrench flat for reliable tightening without slipping. It meets ANSI B16.15 dimensional standards and carries a 125 pressure class rating, making it a code-compliant choice for a wide range of fluid and gas applications. Plumbers, pipefitters, and mechanical contractors install this type of fitting where a secure, leak-resistant lock is required at threaded joints.

This locknut is rated for use in steam, water, gas, oil, and air service, covering the most common utility piping applications found in both residential and commercial mechanical systems. The lead-free bronze construction satisfies requirements for potable water contact where lead-free materials are mandated by code. Its NPSL thread form is the standard for locknut applications, ensuring correct engagement with standard pipe threads. Technicians will find this fitting appropriate for boiler trim, gas distribution headers, compressed air manifolds, and hydronic piping assemblies.

Key Features

• 1-inch NPSL connection size with 1-1/2-inch hex wrench flat for secure installation
• Lead-free bronze construction meets lead-free compliance requirements for potable water systems
• Rated for steam, water, gas, oil, and air service - broad cross-application utility
• Meets ANSI B16.15 dimensional standards for consistent fit with standard pipe fittings
• 125 pressure class rating suitable for typical low-pressure mechanical system applications
• Made in the USA

Compatibility

Designed for use with steam, water, gas, oil, and air service piping systems requiring a 1-inch NPSL hex locknut. Suitable for installations governed by ANSI B16.15 dimensional standards.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local mechanical and plumbing codes. De-energize, depressurize, and fully isolate the piping system before removing or installing any threaded fitting. Use an appropriate pipe wrench or hex wrench on the 1-1/2-inch flats to tighten; do not over-torque bronze fittings, as the material can crack under excessive force. Verify pressure class compatibility with the system operating conditions before placing the line back in service.