Hertel K008599AS25 Spiral Point Tap 3/4-10 Unc

Product Description

The HERTEL K008599AS25 is a spiral point plug tap designed for cutting 3/4-10 UNC right-hand threads in through-hole applications. Built from high-speed steel (HSS) with a titanium nitride (TiN) coating, it offers improved wear resistance and reduced friction during tapping operations. The spiral point geometry pushes chips forward ahead of the cutting zone, keeping flutes clear and reducing the risk of chip packing. With three flutes and an H3 thread limit, this tap produces threads within a controlled tolerance range suited to standard fastener fits. It weighs 1.935 pounds. Machinists and maintenance technicians use this tap in manual or CNC tapping setups on ferrous and non-ferrous materials.

This tap is suited for through-hole threading in general industrial, manufacturing, and maintenance applications requiring 3/4-10 UNC coarse thread. The plug chamfer provides a gradual cutting action with approximately 3 to 5 chamfered threads, making it appropriate for starting threads from the top of a through-hole. The TiN coating extends tool life in production environments where tap replacement frequency is a cost concern. It is a single-piece package with a minimum order quantity of one.

Key Features

• 3/4-10 UNC coarse thread form for standard inch-series through-hole applications
• Spiral point design pushes chips forward, reducing packing in through-holes
• High-speed steel construction provides toughness across a wide range of workpiece materials
• Titanium nitride (TiN) coating improves wear resistance and extends tool life
• H3 thread limit for controlled tolerance fits compatible with standard fasteners
• Right-hand thread direction; no coolant-through feature

Compatibility

Designed for through-hole tapping operations requiring 3/4-10 UNC right-hand threads. Compatible with standard tap holders and tapping heads accepting the appropriate shank size for this tap class.

Installation Notes

This tap should be installed by a qualified machinist or tooling technician familiar with tapping procedures and cutting parameters. Always secure the workpiece fully before tapping and use an appropriate tapping fluid or cutting oil to reduce heat buildup. Ensure the tap holder is aligned perpendicular to the hole to avoid thread distortion or tap breakage. De-energize or lock out any CNC or power tapping equipment before changing tooling.