Kennametal 4130666 Pipe Tap 1-11/2 Npt 5 Flute Hss

Product Description

The KENNAMETAL 4130666 is a standard NPT pipe tap designed for cutting internal tapered pipe threads in metal workpieces. Built from high-speed steel (HSS) with a bright, uncoated finish, it cuts 1-11/2 NPT threads using a 5-flute configuration that promotes chip evacuation and thread quality. The overall length is 3.75 inches, with a thread length of 1.75 inches. The shank diameter measures 1.125 inches and the square drive size is 0.843 inches. This tap is suited for production and maintenance applications where accurate, leak-resistant pipe thread engagement is required.

This tap is intended for use in threading operations on pipe fittings, manifolds, hydraulic blocks, and similar components requiring NPT tapered thread profiles. It is appropriate for use in machine tapping setups or with a tap wrench in manual operations. The 5-flute design is well suited to through-hole and blind-hole applications in ferrous and non-ferrous materials where chip management and thread form accuracy are priorities.

Key Features

• NPT tapered thread profile for leak-resistant pipe thread applications
• High-speed steel construction provides durability across a range of metals
• 5-flute design supports efficient chip evacuation and consistent thread form
• Bright, uncoated finish suitable for use with standard cutting fluids
• Overall length of 3.75 inches with a 1.75-inch thread length for controlled engagement depth
• Square drive size of 0.843 inches compatible with standard tap wrenches and holders

Compatibility

Designed as an OEM-style replacement or direct-use tap for applications requiring 1-11/2 NPT standard pipe thread cutting in compatible tap holders, machine spindles, or manual tap wrenches sized for a 1.125-inch shank diameter.

Installation Notes

This tap should be installed by a qualified machinist or maintenance technician familiar with tapping operations and thread standards. Ensure the workpiece is securely clamped and the tap is properly aligned before beginning the cut to prevent tap breakage or thread misalignment. Use an appropriate cutting fluid for the workpiece material to extend tap life and improve thread finish. Consult applicable shop safety protocols and OSHA guidelines when operating tapping equipment.