Kennametal 4131614 Hand Tap 6-32 Unc Plug Tin Hss

Product Description

The KENNAMETAL 4131614 is a 6-32 UNC straight flute hand tap designed for threading operations in a wide range of metalworking applications. Built from high-speed steel with a titanium nitride (TiN) coating, it delivers improved wear resistance and extended tool life compared to uncoated alternatives. The plug chamfer style provides a balance between cutting performance and thread starting ease, making it well suited for through-hole and moderate blind-hole tapping. With a 2-flute straight flute geometry and a Class 2B fit to H3 thread limit, this tap produces threads that meet standard fastener assembly tolerances. Overall length is 2.0 inches with a thread length of 0.688 inches. Installed by machinists and maintenance professionals working in production and MRO environments.

This tap is intended for right-hand threading in a variety of workpiece materials including steel, cast iron, stainless steel, and non-ferrous metals. The TiN coating makes it particularly effective when tapping abrasive or work-hardening alloys where tool life is a primary concern. It is used in hand tapping operations with a tap wrench or T-handle, as well as in low-speed machine tapping setups. The KHSST series is a standard production line offering from KENNAMETAL for general-purpose thread cutting in the 6-32 UNC size class.

Key Features

• TiN coating improves surface hardness and reduces friction during cutting
• High-speed steel construction provides toughness across a broad material range
• Plug chamfer offers reliable thread starting without excessive axial force
• 2-flute straight flute design suitable for through-hole and short blind-hole applications
• Class 2B fit with H3 thread limit meets standard fastener assembly requirements
• Right-hand thread direction, 6-32 UNC, compatible with standard 6-32 fastener systems

Compatibility

Designed for cutting 6-32 UNC right-hand internal threads in cast iron, non-ferrous metals, stainless steel, and steel workpieces. Part of the KENNAMETAL KHSST series for general-purpose hand and machine tapping.

Installation Notes

This tap is installed by machinists or maintenance technicians using a tap wrench, T-handle, or compatible low-speed tapping attachment. Ensure the workpiece is secured and the pilot hole is drilled to the correct tap drill size for a 6-32 UNC thread before beginning the operation. Apply appropriate cutting fluid for the workpiece material, especially when tapping stainless steel, to reduce heat and extend tool life. Reverse the tap periodically during hand tapping to break chips and prevent binding.