Hertel K008599AS Spiral Point Tap 3/4-10 Unc Plug Hss

Product Description

The HERTEL K008599AS is a spiral point tap designed for threading 3/4-10 UNC holes in production and maintenance machining environments. Spiral point geometry pushes chips ahead of the cutting edge and into the hole, making this tap well suited for through-hole applications where chip evacuation is a priority. The tap is manufactured from high speed steel for durability across a broad range of workpiece materials and carries a bright finish with an H3 thread limit for close dimensional control. A plug chamfer distributes the cutting load across the first several threads, balancing starting ease with full thread engagement depth. Machinists, toolroom technicians, and maintenance mechanics are the primary users of this tool.

This tap is used in general machining shops, fabrication facilities, and maintenance operations where 3/4-10 UNC internal threads are required. The plug chamfer style makes it appropriate for through-hole threading and for blind holes where sufficient thread run-out depth is available. Right-hand thread cutting matches standard fastener orientation. The 3-flute design provides a balance of flute strength and chip room suitable for most ferrous and non-ferrous materials encountered in typical shop work.

Key Features

• Spiral point geometry pushes chips forward, reducing clogging in through-hole operations
• High speed steel construction provides wear resistance across a range of workpiece materials
• H3 thread limit ensures dimensional accuracy and consistent fit with standard UNC fasteners
• Plug chamfer distributes cutting load for reliable thread starting
• Right-hand cutting direction matches standard 3/4-10 UNC fastener threads
• Bright finish with no coolant-through requirement simplifies tooling setup

Compatibility

Designed for cutting 3/4-10 UNC right-hand internal threads in through-hole applications across general machining, fabrication, and maintenance environments.

Installation Notes

This tap is installed in a tap holder or tapping attachment on a drill press, mill, or lathe; always ensure the spindle and tap are properly aligned before engaging the workpiece. Secure the workpiece firmly before tapping and use an appropriate cutting fluid for the material being threaded. Inspect the tap for wear or chipping before each use and replace if thread form is compromised. Follow applicable shop safety procedures and machine guarding requirements during all tapping operations.