Value Collection MSC-04663092 Pipe Tap 1 11-1/2 Npt Hss

Product Description

The VALUE COLLECTION MSC-04663092 is a 1 - 11-1/2 NPT interrupted thread pipe tap machined from high-speed steel with a bright, uncoated finish. Interrupted thread geometry reduces cutting friction and chip packing in tougher materials by alternating cutting edges across 5 flutes. This tap is sized for 1-inch NPT pipe threads and is used by machinists, pipefitters, and maintenance technicians to cut internal tapered pipe threads in metal workpieces. The 1.125-inch shank diameter and 1.75-inch thread length suit production and repair threading operations where a full-form NPT thread is required for pressure-rated pipe connections.

This pipe tap is suited for threading operations in steel, cast iron, and similar ferrous materials in industrial, plumbing, and mechanical maintenance settings. The interrupted thread design is particularly effective in through-holes and when cutting deeper threads where chip evacuation is a concern. It fits standard tap holders and machine spindles sized for a 1.125-inch shank. Typical applications include fabrication shops, pipe assembly, and field repair of threaded pipe fittings requiring a leak-resistant NPT taper thread form.

Key Features

• Interrupted thread geometry reduces chip packing and cutting torque in ferrous materials
• 5 flutes provide multiple cutting edges for efficient material removal
• High-speed steel construction resists heat and wear during threading operations
• Bright, uncoated finish allows easy visual inspection of cutting edge condition
• Regular hook angle suits general-purpose threading in a range of metal workpieces
• 1 - 11-1/2 NPT thread standard for tapered pipe thread applications

Compatibility

Designed for use in standard tap holders and machine spindles accepting a 1.125-inch shank diameter; threads to the NPT standard for tapered pipe fittings and connections.

Installation Notes

This tap is installed and operated by machinists or pipefitters using a tap wrench, drill press, or CNC tapping setup sized for the shank diameter. Ensure the pilot hole is drilled to the correct NPT tap drill size before threading. Use cutting fluid appropriate for the workpiece material to extend tool life and improve thread quality. Secure the workpiece firmly and align the tap perpendicular to the hole before applying cutting pressure.