Kennametal 4130686 Hand Tap 1/2-13 Unc Plug Tin Hss

Product Description

The KENNAMETAL 4130686 is a 1/2-13 UNC straight flute hand tap designed for cutting internal threads in a wide range of metallic workpieces. Built from high-speed steel with a titanium nitride (TiN) coating, it delivers extended tool life and reduced friction during tapping operations. The plug chamfer style features a 4-flute straight flute configuration and carries a 3B class of fit with an H3 thread limit, making it suitable for standard tolerance internal thread applications. Overall length is 3.38 inches with a thread length of 1.656 inches. This tap is intended for use with a tap wrench or tapping attachment in a manual or low-speed machine tapping setup.

This tap is rated for use in cast iron, stainless steel, and steel. The plug chamfer — typically 3 to 5 chamfered threads — makes it appropriate as a starter or finishing tap in through-holes and as a general-purpose tap in blind holes where full thread depth is not required at the very bottom. It is a standard right-hand thread tap suited for production and maintenance applications across machine shops, manufacturing facilities, and field repair environments.

Key Features

• 1/2-13 UNC right-hand thread, 3B class of fit, H3 thread limit
• High-speed steel construction with titanium nitride (TiN) coating for extended wear resistance
• Plug chamfer with 4-flute straight flute geometry for versatile through-hole and blind-hole use
• 3.38-inch overall length with 1.656-inch thread length and 0.367-inch shank diameter
• Rated for cast iron, stainless steel, and steel material applications
• No coolant-through feature; suitable for conventional hand tapping and low-speed machine tapping

Compatibility

Designed for cutting 1/2-13 UNC internal threads in cast iron, stainless steel, and steel workpieces. Compatible with standard tap wrenches and tapping attachments accepting a 0.367-inch shank diameter.

Installation Notes

Hand taps should be installed and operated by a qualified machinist or maintenance technician familiar with thread-cutting procedures. Ensure the workpiece is securely fixtured and the tap is properly aligned with the drilled pilot hole before applying torque. Use an appropriate cutting fluid or tapping compound for the workpiece material to reduce heat and tool wear. Reverse the tap periodically during cutting to break chips and prevent tap breakage, particularly in blind-hole applications.