B K Mueller Industries 521-983HN Black Hex Bushing

Product Description

The B K Mueller Industries 521-983HN is a black hex bushing designed to reduce pipe thread size from a 2-inch female thread to a 1/2-inch male thread. This type of fitting is a standard component in threaded pipe systems used for gas, air, and other compatible media. The hex profile provides a secure grip point for wrenches during installation. It is typically installed by plumbers, pipefitters, or HVAC technicians working on threaded iron pipe assemblies in both residential and light commercial applications.

This hex bushing is suited for use in threaded black iron pipe systems where a reduction in port or outlet size is required. Common applications include gas distribution manifolds, compressed air lines, and mechanical piping systems where a step-down fitting is needed to transition between pipe sizes. The black finish indicates a non-galvanized iron fitting appropriate for gas service and dry applications.

Key Features

• Reduces 2-inch female thread to 1/2-inch male thread
• Hex body profile allows standard wrench engagement during installation
• Black iron finish suitable for gas and dry compressed air service
• Threaded connection type for use with standard NPT threaded pipe systems
• Sold as a package of 5 pieces per unit

Compatibility

Designed as an OEM-style replacement and standard-use fitting for threaded black iron pipe assemblies using NPT connections in residential and commercial piping systems.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter in accordance with applicable local plumbing or mechanical codes. Shut off all gas or air supply and depressurize the line before disassembly or fitting installation. Apply an appropriate thread sealant or PTFE tape rated for the intended service medium before threading the bushing into the female port. Do not overtighten; use wrench engagement on the hex body only.