B K Mueller 521-954HN Black Hex Bushing 1x3/4 Inch 10pk

Product Description

The B K Mueller Industries 521-954HN is a black hex bushing designed to reduce a 1-inch female threaded pipe connection down to a 3/4-inch male threaded pipe connection. Hex bushings of this type are standard fittings used by plumbers and pipefitters to transition between two different pipe sizes within a threaded piping system. The hexagonal body allows wrench engagement for secure, leak-free tightening. This part ships in a package of 10 units, making it practical for jobs requiring multiple reductions on the same run.

This fitting is used in residential and light commercial plumbing and gas piping systems where a threaded pipe size reduction is required. It is commonly installed in water supply lines, gas distribution piping, and general black iron pipe assemblies. The black iron finish makes it particularly common in gas line applications. A licensed plumber or pipefitter typically installs this fitting during rough-in or service work on threaded iron pipe systems.

Key Features

• Reduces 1-inch female threads to 3/4-inch male threads in a single fitting
• Hex body design allows full wrench engagement for proper torque
• Black iron finish suited for gas piping and black iron pipe systems
• Sold in a 10-unit package for multi-connection jobs
• Standard threaded fitment compatible with NPT threaded pipe assemblies

Compatibility

Designed as an OEM-style replacement or new-installation fitting for threaded iron pipe systems requiring a 1-inch to 3/4-inch reduction.

Installation Notes

Installation is typically performed by a licensed plumber or pipefitter working on threaded iron pipe systems. Shut off the gas or water supply and depressurize the line before beginning work. Apply an appropriate thread sealant or PTFE tape to the male threads before assembly. All gas piping installations must comply with applicable local codes and IFGC requirements.