Midland Industries 64705 Hex Locknut 1 Inch Galvanized Iron

Product Description

The MIDLAND INDUSTRIES 64705 is a 1-inch nominal hex locknut manufactured from galvanized malleable iron. It is designed to secure pipe fittings and threaded connections in place, preventing loosening caused by vibration or system pressure. The 64705 carries a 150 psi pressure rating and is threaded 1-11/2 NPT female straight, with a wall thickness of 0.38 inches. The galvanized finish provides corrosion resistance suitable for exposed or mildly corrosive environments. Plumbers, pipefitters, and mechanical contractors install this type of fitting in gas, water, and general-purpose piping systems where a reliable threaded locknut is required.

This locknut is used in residential and commercial piping applications where 1-inch threaded pipe connections must be mechanically secured. It is rated for temperatures from -20 degrees F to 350 degrees F, making it suitable for a wide range of hot and cold piping systems including water supply, low-pressure gas distribution, and mechanical piping runs. It is part of the galvanized 150-pound malleable fitting series and is typically installed alongside bushings, couplings, nipples, and other standard threaded fittings.

Key Features

• Galvanized malleable iron construction provides corrosion resistance for exposed piping environments
• 150 psi pressure rating suitable for standard residential and light commercial piping systems
• 1-11/2 NPT female straight thread matches standard pipe thread for secure, leak-resistant engagement
• Wide temperature range of -20 degrees F to 350 degrees F supports hot and cold service applications
• 0.38-inch wall thickness delivers structural durability in threaded connections under mechanical stress

Compatibility

Designed as an OEM-style replacement and standard fitment for 1-inch nominal threaded pipe systems using galvanized 150-pound malleable iron fittings.

Installation Notes

Installation is performed by licensed plumbers or pipefitters in accordance with applicable IPC and IFGC codes. Shut off all system pressure and drain the line before removing or installing any threaded fitting. Use a pipe wrench or appropriately sized hex wrench to seat the locknut firmly without over-torquing the fitting. Apply thread sealant or PTFE tape appropriate for the service type prior to making up the connection.