Hertel R837560-S Pipe Tap 1-11/2 Npt 5 Fl Hss

Product Description

The HERTEL R837560-S is a standard NPT pipe tap designed for cutting National Pipe Taper threads in metal workpieces. Built from high speed steel (HSS) with a bright, uncoated finish, this tap delivers consistent thread form in a short-projection configuration suited to tight-clearance setups. It cuts a 1 - 11-1/2 NPT thread with a 1.75-inch thread length and 5 flutes, producing clean chip evacuation and accurate taper engagement. Machinists, pipefitters, and mechanical contractors reach for this tool when threading pipe fittings, manifolds, and ported housings that require leak-resistant NPT connections.

This tap is used in job-shop machining, maintenance and repair operations, and fabrication environments wherever NPT-threaded ports must be cut into steel, cast iron, or similar ferrous materials. The short-projection design keeps the tap body close to the spindle nose, reducing deflection during tapping operations on lathes, drill presses, and CNC machining centers. It is equally at home on manual tapping arms in field service settings.

Key Features

• 1 - 11-1/2 NPT thread form for tapered pipe thread applications
• High speed steel construction for durability in ferrous and non-ferrous materials
• 5-flute design promotes efficient chip evacuation and smooth thread cutting
• Short-projection tap type reduces overhang and deflection
• Bright, uncoated finish for general-purpose tapping without added coating variables
• 1.125-inch shank diameter and 0.843-inch square drive for positive torque transfer

Compatibility

Designed as a standard replacement or direct-purchase NPT pipe tap suitable for use with tap handles, tapping heads, and machine spindles sized to accept a 1.125-inch shank diameter.

Installation Notes

Pipe taps of this size should be installed by qualified machinists or pipefitters familiar with tapping procedures for large-diameter NPT threads. Secure the workpiece firmly and use appropriate cutting fluid to extend tool life and improve thread finish. Verify spindle speed and feed rate are appropriate for the material being tapped before starting the cut. Always back the tap out periodically to clear chips and prevent tap breakage in deep or blind holes.