Kennametal 4130817 Pipe Tap 3/4-14 Nptf 5 Flutes Hss

Product Description

The KENNAMETAL 4130817 is a standard pipe tap designed to cut 3/4-14 NPTF threads in metal workpieces. It is manufactured from high-speed steel with a bright, uncoated finish and features 5 flutes for efficient chip evacuation during tapping operations. With an overall length of 3.25 inches and a thread length of 1.375 inches, this tap produces the tapered, pressure-tight thread form required by the NPTF standard. It is installed by machinists, pipefitters, and maintenance trades using a tap wrench or machine holder. The regular hook geometry suits a range of ferrous and non-ferrous materials in production and maintenance environments.

This tap is suited for creating NPTF pipe threads in applications where a pressure-tight, dryseal connection is required without the use of a sealant. Typical uses include threading ports in hydraulic manifolds, pneumatic fittings, fluid-system housings, and general industrial pipe connections. The 3/4-14 thread size is a common specification in mid-range fluid and gas plumbing assemblies. It is appropriate for both hand tapping and low-speed machine tapping operations where controlled feed and alignment are maintained.

Key Features

• 3/4-14 NPTF thread form produces a dryseal, pressure-tight thread without sealant
• 5-flute design improves chip clearance and thread quality in through and blind port applications
• High-speed steel construction provides toughness and resistance to breakage under moderate cutting loads
• Bright, uncoated finish allows easy visual inspection of wear and is compatible with a wide range of cutting fluids
• Regular hook geometry suits general-purpose use across ferrous and non-ferrous base materials
• Shank diameter of 0.906 inches and square drive size of 0.679 inches fit standard tap holders and wrenches for this size range

Compatibility

Designed as an OEM-style replacement or standard production tap for applications requiring a 3/4-14 NPTF thread form in metal substrates.

Installation Notes

This tap should be installed by a qualified machinist, pipefitter, or maintenance technician familiar with proper tapping procedure. Always ensure the workpiece is securely fixtured and that the tap is aligned perpendicular to the drilled hole before starting the thread. Apply an appropriate cutting fluid for the base material to reduce heat and extend tool life. When hand tapping, advance with steady forward pressure and periodically reverse to break chips and prevent binding.