Value Collection JY79772083 Npt Pipe Tap 1-1/2 7 Flute

Product Description

The VALUE COLLECTION JY79772083 is a standard NPT pipe tap designed for cutting internal tapered pipe threads in metal workpieces. It produces 1-1/2 to 11-1/2 NPT threads, the large-diameter taper standard used throughout plumbing, HVAC piping, and industrial pipe fitting applications. Built from carbon steel with a bright, uncoated finish, this tap delivers reliable thread-cutting performance in ferrous and softer non-ferrous materials. The 7-flute design distributes cutting load across more cutting edges than a typical 4-flute tap, reducing chatter and improving thread finish in through-hole and pipe boss applications. Overall length is 4.25 inches, with a 1.5-inch shank diameter and a 1.125-inch square drive for use in standard tap wrenches or machine holders.

This tap is suited for plumbers, pipefitters, HVAC mechanics, and maintenance technicians who need to thread large-diameter pipe ports in manifolds, valve bodies, pipe flanges, or equipment housings. The 1-1/2 NPT thread size is commonly encountered in commercial HVAC chilled water and steam piping, industrial process lines, and large-bore plumbing systems. It is appropriate for use in job-site repair, fabrication shop work, or maintenance environments where threading new holes or cleaning up damaged internal pipe threads is required.

Key Features

• 1-1/2 to 11-1/2 NPT taper thread form for standard pipe thread applications
• 7 flutes for distributed cutting load and improved thread finish
• Carbon steel construction for cutting ferrous and softer materials
• Bright, uncoated finish for easy visual inspection of cutting edge condition
• 1.125-inch square drive compatible with standard large tap wrenches and machine holders
• 4.25-inch overall length accommodates deep boss and flange applications

Compatibility

Designed as a standard OEM-style pipe tap for use in any application requiring 1-1/2 to 11-1/2 NPT internal tapered pipe threads, as referenced by ASME B1.20.1 pipe thread standards.

Installation Notes

This tap should be installed and operated by qualified machinists, pipefitters, or mechanics familiar with pipe thread cutting procedures. Always secure the workpiece firmly and use appropriate cutting fluid for the material being tapped to extend tool life and improve thread quality. Apply consistent, even rotational pressure and back off periodically to break chips and clear flutes. Inspect cutting edges before use and replace the tap if edges are chipped or worn to avoid damaged threads or tool breakage.