B K Mueller 521-964HN Black Hex Bushing 1.25 X 0.75 in

Product Description

The B K Mueller Industries 521-964HN is a black hex bushing used to reduce pipe thread size in gas, plumbing, and mechanical piping systems. This threaded fitting connects a larger female pipe thread to a smaller male pipe thread, allowing technicians to adapt between line sizes without cutting or welding. The hex profile provides a secure grip point for a wrench during installation, making the connection straightforward and reliable. It is sold in packages of 5 units and weighs approximately 1.83 pounds per package. Licensed plumbers, pipefitters, and HVAC technicians are the primary installers of this type of fitting.

This hex bushing is suited for residential and light commercial piping applications where a pipe size reduction is needed at a threaded connection point. Common install scenarios include gas supply lines, black iron pipe systems, and general mechanical piping where 1.25-inch to 0.75-inch reductions are required. The black finish is standard for use in black iron pipe assemblies typical of gas distribution systems.

Key Features

• 1.25-inch female pipe thread to 0.75-inch male pipe thread reduction
• Hex body profile allows wrench engagement for proper torque during assembly
• Black finish suitable for black iron pipe gas and mechanical systems
• Sold in a package quantity of 5 units
• Standard threaded fitting for use in common pipe reduction applications

Compatibility

Designed as an OEM-style threaded hex bushing for use in standard black iron pipe systems requiring a 1.25-inch to 0.75-inch pipe thread reduction.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable code requirements including the International Fuel Gas Code (IFGC) or International Plumbing Code (IPC) as applicable. Shut off the gas or water supply and relieve any system pressure before disassembling or modifying threaded connections. Apply appropriate thread sealant or tape rated for the service type before making up the connection. Use a pipe wrench on the hex body to avoid damage to adjacent fittings or pipe runs.