Hertel K013060AS Spiral Point Tap 7/8-14 Unf Hss Bright

Product Description

The HERTEL K013060AS is a spiral point tap designed for cutting 7/8-14 UNF internal threads in through-hole applications. Manufactured from high speed steel with a bright finish, this plug chamfer tap is built for consistent thread forming in production and maintenance environments. The spiral point geometry pushes chips forward ahead of the cutting action, reducing the risk of chip packing in the flute area. With 3 flutes and an H4 thread limit, it holds tight tolerances required for Class 3B fit applications. Machinists, toolroom technicians, and maintenance professionals use this tap in manual tapping operations and machine tapping setups alike.

This tap is suited for threading through-holes in steel, iron, aluminum, and similar machinable materials where a 7/8-14 UNF thread form is required. The plug chamfer makes it appropriate for starting in a pre-drilled through-hole without the need for a starting tap. It is a standard choice for production tapping where chip evacuation is a priority and the hole exits the far side of the workpiece. The right-hand thread direction is consistent with standard UNF fastener applications in general machine assembly, equipment repair, and fabrication work.

Key Features

• Spiral point geometry pushes chips forward, ideal for through-hole tapping
• High speed steel construction for durability across a range of machinable materials
• Plug chamfer provides a practical lead for starting in through-holes
• H4 thread limit maintains tolerance control for Class 3B fit requirements
• Bright finish with no coating — suitable for use with standard cutting fluids
• Right-hand thread direction, 3 flutes, no coolant-through feature

Compatibility

Designed as a standard replacement or production tap for any application requiring a 7/8-14 UNF Class 3B internal thread in a through-hole workpiece.

Installation Notes

This tap is installed by qualified machinists or toolroom technicians using a tap wrench, tapping head, or CNC tapping attachment sized for the 7/8-14 shank. Always use the correct tap drill size for 7/8-14 UNF before tapping and apply a suitable cutting fluid for the workpiece material. Secure the workpiece fully before beginning the tapping operation to prevent movement that could break the tap. Inspect the tap for wear or chipping before each use, as a damaged cutting edge can compromise thread quality and cause tap breakage.