Midland Industries 64708 Hex Locknut 2 in Galvanized Iron

Product Description

The MIDLAND INDUSTRIES 64708 is a 2-inch nominal hex locknut manufactured from galvanized malleable iron for use in low-pressure pipe systems. It provides a secure, vibration-resistant connection where threaded pipe or fittings must be locked in place against a surface or fitting face. The 2-11/2 NPT female straight thread engages standard tapered male threads, and the galvanized finish provides corrosion resistance suitable for wet or outdoor environments. Rated at 150 psi, this locknut handles typical residential and light commercial piping pressures. Plumbers and pipefitters install this fitting in gas, water, and general-purpose piping assemblies where a locking fastener is required on a threaded connection.

This locknut is used in residential and light commercial plumbing, gas distribution, and general industrial piping applications. It is a standard 150-pound malleable iron galvanized fitting suited for installations where vibration or mechanical movement could loosen standard fittings over time. Common install scenarios include securing pipe nipples through panels or brackets and locking union connections in fixed piping runs. It is appropriate for use within its rated temperature range of -20 degrees F to 350 degrees F.

Key Features

• Galvanized malleable iron construction for corrosion resistance in wet and outdoor environments
• 150 psi pressure rating suitable for residential and light commercial piping systems
• 2-11/2 NPT female straight thread for standard pipe compatibility
• Operating temperature range of -20 degrees F to 350 degrees F
• Hex profile allows standard wrench engagement for secure installation
• 0.55-inch height profile for use in space-constrained installations

Compatibility

Designed as an OEM-style replacement or standard component for 2-inch nominal 150-pound galvanized malleable iron pipe fitting assemblies in residential and light commercial plumbing and gas piping systems.

Installation Notes

Installation is performed by a licensed plumber or pipefitter. Shut off and depressurize the piping system before threading or unthreading any fittings. Apply thread sealant or PTFE tape appropriate for the service medium before engagement. Use a properly sized wrench on the hex profile and avoid over-tightening, which can crack malleable iron fittings.