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The ASC Engineered Solutions 318905486 is a black steel threaded hex bushing used to reduce a 1/2-inch female fitting down to a 3/8-inch male threaded connection. This type of bushing is a standard pipe fitting used in gas, water, and general plumbing distribution systems. The hex profile allows a wrench to seat properly during installation, giving the installer positive torque control. At 0.06 pounds, the part is lightweight but built from solid black steel for reliable service in typical trade applications. Plumbers, pipefitters, and HVAC mechanics install this fitting as part of threaded iron pipe assemblies in both residential and light commercial settings.
This hex bushing is suited for threaded pipe systems where a reduction in pipe size is needed at a junction point. Common install scenarios include gas supply lines, compressed air distribution, and water piping where NPT-threaded black steel fittings are specified. The 1/2-inch to 3/8-inch reduction is one of the most frequently used sizes in residential gas appliance connections and branch line work.
Designed as an OEM-style replacement or new-installation fitting for threaded black steel pipe systems using standard NPT connections.
This fitting is installed by licensed plumbers and pipefitters working on threaded iron pipe systems. Shut off gas or water supply and depressurize the line before making any fitting changes. Apply thread sealant or approved pipe thread tape to all threaded connections per local code requirements and IFGC or IPC guidelines. Do not overtighten, as black steel fittings can crack if subjected to excessive torque.
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