Sandvik Coromant 6967076 Extension Pipe Tap 1/8-27 Npt Hss

Product Description

The SANDVIK COROMANT 6967076 is an extension pipe tap designed to cut 1/8-27 NPT internal pipe threads in metal workpieces. Part of the CoroTap 300 series, it is manufactured from high-speed steel (HSS) and features a steam tempered finish that improves lubricity and surface hardness during cutting operations. The tap has a shank diameter of 0.437 inches and a thread length of 0.5512 inches, making it suited for applications where standard-length taps cannot reach the workpiece. Machinists and pipe fitters working in fabrication shops, maintenance environments, and production settings rely on this tap for cutting accurate NPT taper pipe threads.

This tap is applied wherever 1/8-27 NPT threads are required in pipe fittings, hydraulic blocks, pneumatic manifolds, and similar components. The NPT taper thread standard is widely used in North American plumbing and fluid-power systems. The extension geometry allows threading in recessed bores or tight quarters where a standard pipe tap would not seat properly. It is suitable for use in both manual tapping operations and CNC machining centers equipped for rigid tapping.

Key Features

• 1/8-27 NPT taper pipe thread form for standard North American pipe connections
• High-speed steel construction for durability across a broad range of workpiece materials
• Steam tempered finish improves wear resistance and reduces friction during cutting
• Extension design reaches recessed bores and deep features inaccessible to standard taps
• 0.437-inch shank diameter for secure chuck or holder retention
• Part of the CoroTap 300 series for consistent performance in production tapping

Compatibility

Designed for use in any machine or hand tapping setup accepting a 0.437-inch round shank tap, and compatible with standard tap holders and chucks sized for that shank diameter. Cuts 1/8-27 NPT threads per the NPT taper pipe thread standard.

Installation Notes

Extension pipe taps are typically installed by machinists or pipe fitters using a tap wrench, drill press, or CNC machining center with a suitable tap holder. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill size for 1/8-27 NPT before threading begins. Apply appropriate cutting fluid to extend tap life and improve thread finish. Inspect the tap for wear or chipping before each use and replace if damaged to avoid thread damage or tap breakage.