Hertel 87065 Straight Flute Tap 2-12 Unf 6 Flute Hss

Product Description

The HERTEL 87065 is a straight flute tap designed for cutting 2-12 UNF internal threads in a wide range of metalworking and machining applications. Built from high-speed steel (HSS) with a bright, uncoated finish, this tap features a bottoming chamfer that allows threading close to the bottom of blind holes. With 6 flutes and an H6 thread limit, it delivers consistent thread geometry and chip clearance in short-chipping materials. The overall length is 5 inches, the thread length is 2 inches, and the shank diameter is 1.644 inches. This tap is suited for use in manual tapping operations or with machine tapping setups where straight-flute tooling is preferred.

This tap is used in precision machining environments including job shops, maintenance and repair operations, and manufacturing facilities where UNF thread standards are required. The bottoming chamfer design is particularly useful when threads must extend to or near the bottom of a blind hole. Right-hand thread direction is standard for conventional UNF fastener applications. It is appropriate for use in ferrous and non-ferrous metals that produce short chips, such as cast iron, brass, and free-machining steels.

Key Features

• Bottoming chamfer allows threading to the base of blind holes
• 6-flute design provides improved chip evacuation and thread finish in short-chipping materials
• H6 thread limit ensures consistent tolerance for standard UNF fastener fit
• High-speed steel construction offers durability across a range of workpiece materials
• Bright, uncoated finish suitable for use with cutting fluids in standard tapping operations
• Right-hand thread direction for standard UNF threading

Compatibility

Designed for cutting 2-12 UNF right-hand internal threads. Suitable for use in manual tap handles and machine tapping setups that accept a shank diameter of 1.644 inches.

Installation Notes

This tap should be installed and operated by qualified machinists familiar with thread cutting procedures. Always ensure the workpiece is securely fixtured and the correct cutting fluid is applied before beginning the tapping operation. Power down and de-energize any machine tool before changing or setting tooling. Do not force the tap if resistance increases unexpectedly, as breakage in a blind hole can result in difficult extraction.