Hertel K008516AS25 Spiral Point Tap 1/2-13 Unc Tin Hss

Product Description

The HERTEL K008516AS25 is a spiral point tap designed to cut 1/2-13 UNC internal threads in through-hole applications. Manufactured from high-speed steel (HSS) with a titanium nitride (TiN) coating, this tap delivers increased surface hardness and extended tool life compared to uncoated alternatives. It features a plug chamfer, 3-flute configuration, and right-hand thread direction. The H3 thread limit holds tolerance for a 3B class of fit, making it suitable for precision threading where consistent thread form is required. Machinists and maintenance technicians install this tap in drill presses, CNC machining centers, and hand-tapping operations.

This tap is suited for through-hole threading in ferrous and non-ferrous metals in both production and maintenance environments. The spiral point geometry pushes chips ahead of the cutting edge and out through the exit side of the hole, making it well-matched for through-hole tapping in steel, aluminum, and similar machinable materials. It is a standard choice for job shops, manufacturing facilities, and industrial maintenance operations requiring reliable 1/2-13 UNC threads.

Key Features

• 1/2-13 UNC thread size for common fastener compatibility
• 3-flute spiral point geometry pushes chips forward through the hole
• Plug chamfer provides a balance of thread lead-in and cutting efficiency
• TiN coating increases surface hardness and reduces friction for longer tool life
• H3 thread limit meets 3B class of fit tolerances
• Right-hand cut, no coolant-through requirement

Compatibility

Designed as an OEM-style replacement or direct-use tap for any application requiring a 1/2-13 UNC, 3-flute, plug-chamfer spiral point tap with an H3 thread limit and 3B class of fit.

Installation Notes

This tap is installed by machinists and maintenance technicians using a tap wrench, tapping head, or CNC rigid tapping cycle. Always ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill size for 1/2-13 UNC before tapping. Apply appropriate cutting fluid to reduce heat and extend tool life. Inspect the tap for wear or chipping before each use and replace if thread form shows degradation.