Reiff Nestor 46962 Pipe Tap 1/8-27 Npsf 4 Flute Hss

Product Description

The REIFF NESTOR 46962 is a standard pipe tap designed to cut internal NPSF (National Pipe Straight Fuel) threads in metal workpieces. Built from high-speed steel with a bright, uncoated finish, it produces a 1/8-27 thread form suitable for fuel and hydraulic line fittings. The 4-flute geometry provides balanced cutting action and adequate chip clearance in through-hole and shallow blind applications. With a 0.75-inch thread length and a regular chamfer, this tap is suited for production tapping and repair work where a straight pipe thread is required. Machinists, pipefitters, and maintenance technicians use this tool in both shop and field settings.

This tap is used in applications requiring straight pipe threads rather than tapered NPT threads, such as fuel system fittings, hydraulic manifolds, and instrumentation ports. The 1/8-27 size is a common thread standard found throughout HVAC controls, plumbing fittings, and fluid-power components. Series 120BF designates the standard geometry configuration for this tool line. It is appropriate for use in steel, aluminum, cast iron, and similar materials when paired with correct cutting fluid and tapping speed.

Key Features

• 1/8-27 NPSF straight pipe thread form for fuel and fluid fittings
• High-speed steel construction for durability across a range of metals
• 4-flute design provides balanced cutting and chip evacuation
• Regular chamfer for standard through-hole and entry tapping
• 0.75-inch thread length suits typical fitting boss depths
• Bright, uncoated finish allows direct inspection of cutting edges

Compatibility

Designed as a standard replacement or new-use tap for applications requiring 1/8-27 NPSF straight pipe threads in ferrous and non-ferrous metals.

Installation Notes

This tap is installed and operated by machinists or pipefitters using a tap handle, T-handle wrench, or machine tapping fixture. Always use an appropriate cutting fluid for the workpiece material and back the tap off periodically to break chips and prevent binding. Secure the workpiece firmly before tapping to prevent movement. Inspect the tap for chipping or wear before each use, as a damaged tap can seize in the hole or produce out-of-tolerance threads.