B K Mueller 521-941HC Black Hex Bushing 3/4x1/4

Product Description

The B K Mueller Industries 521-941HC is a black hex bushing used to reduce a 3/4-inch female threaded port down to a 1/4-inch male threaded connection. Hex bushings are standard fittings in gas, air, and fluid piping systems where a reducer is needed without adding pipe length. The hex body allows a wrench to seat the fitting securely. This type of fitting is installed by plumbers, pipefitters, and HVAC technicians working on low-pressure gas lines, compressed air systems, and general pipe assemblies. The black finish indicates a malleable iron or black iron construction typical of gas-service fittings.

This hex bushing is suited for residential and light commercial applications where a threaded pipe system requires a size reduction from 3/4 inch to 1/4 inch. Common install scenarios include gas manifolds, air compressor lines, pressure gauge ports, and piping headers where a smaller instrument, valve, or fitting must be connected to a larger tapped opening. It is sold in a package quantity of 75 units, making it appropriate for supply house stocking or contractor bulk purchasing.

Key Features

• Reduces 3/4-inch female thread to 1/4-inch male thread in a single fitting
• Hex body design allows standard wrench installation without slippage
• Black finish consistent with black iron gas-service pipe fittings
• Sold in a package quantity of 75 units for bulk stocking
• Compact bushing profile minimizes added length in tight piping runs

Compatibility

Designed as a standard threaded hex bushing for use in black iron and malleable iron pipe systems requiring a 3/4-inch to 1/4-inch threaded reduction.

Installation Notes

Installation is performed by a licensed plumber, pipefitter, or HVAC technician. Always shut off and depressurize the line before installing or removing threaded fittings. Apply thread sealant or PTFE tape rated for the intended service medium prior to threading the fitting in place. Follow applicable code requirements, including IFGC guidelines for gas-service piping and local jurisdiction standards.