Value Collection MSC-04676045 Extension Pipe Tap 3/8-18 Npt

Product Description

The VALUE COLLECTION MSC-04676045 is a 3/8-18 NPT extension pipe tap designed for cutting internal pipe threads in applications where standard-length taps cannot reach. Built from high-speed steel with a bright uncoated finish, this tap features 4 flutes and a plug chamfer for progressive thread engagement. The 6-inch overall length provides the extended reach needed in deep bores or recessed fittings. With a 0.25-inch shank diameter and a 0.531-inch square drive size, it seats securely in a tap wrench or machine holder. Machinists, pipefitters, and plumbers use this tool when rethreading or tapping new pipe thread connections in tight or deep locations.

This extension pipe tap is suited for threading 3/8-18 NPT connections in ferrous and non-ferrous materials in both residential and light commercial plumbing, HVAC, and industrial piping applications. The plug chamfer style makes it appropriate for through-holes and most standard pipe tapping operations where full thread engagement is required before the chamfer relief. It is typically used with a tapping fluid appropriate for the workpiece material to extend tool life and produce clean thread form.

Key Features

• 3/8-18 NPT thread form for standard American pipe thread connections
• 6-inch overall length provides extended reach into deep bores or recessed ports
• High-speed steel construction resists heat generated during tapping operations
• 4-flute design promotes chip evacuation and consistent thread form
• Plug chamfer allows progressive thread engagement suitable for through-hole applications
• Bright uncoated finish with 0.25-inch shank diameter and 0.531-inch square drive for standard tap wrench compatibility

Compatibility

Designed as an OEM-style replacement or standard tooling addition for use in any application requiring 3/8-18 NPT internal pipe threads; fits tap wrenches and machine holders accepting a 0.25-inch round shank with a 0.531-inch square drive end.

Installation Notes

This tap is installed by machinists, pipefitters, or plumbers using a tap wrench or tapping machine. Always ensure the workpiece is securely fixtured and the correct pilot hole diameter is drilled before tapping. Apply an appropriate cutting fluid for the material being threaded. Inspect the tap for wear or damage before each use and replace if flutes are chipped or the cutting edges are dull to avoid thread damage or tap breakage.