Hertel K008019AS 1-64 Unc Bottoming Hand Tap Hss 2-flute

Product Description

The HERTEL K008019AS is a 1-64 UNC bottoming hand tap designed for cutting internal threads to the bottom of blind holes. Built from high speed steel with a bright uncoated finish, this two-flute straight flute tap operates right-hand and is ground to an H2 thread limit with a 2B class of fit. The overall length is 1-11/16 inches with a 3/8-inch thread length, making it suited for shallow, precise threading work. Machinists, toolroom technicians, and maintenance mechanics reach for this tap when a bottoming chamfer is required to maximize thread engagement in a blind hole.

This tap is used in general metalworking, maintenance, and repair applications where a 1-64 UNC thread form must be tapped flush to the bottom of a hole. The straight flute geometry makes it appropriate for short-chipping materials. It is typically used in manual tapping operations with a tap handle or tap wrench, and it is suited for both production and bench work environments where fine-thread tapping at this size is required.

Key Features

• Bottoming chamfer allows threading to the bottom of blind holes
• High speed steel construction provides hardness and wear resistance for general tapping
• Bright uncoated finish for use across a range of common metalworking materials
• H2 thread limit and 2B class of fit for standard UNC tolerance requirements
• Two-flute straight flute design handles short-chipping materials efficiently
• Right-hand thread direction for standard tapping operations

Compatibility

Designed as an OEM-style replacement or standard tooling option for any application requiring a 1-64 UNC bottoming hand tap with an H2 thread limit and 2B class of fit.

Installation Notes

A licensed machinist or qualified mechanic should install this tap using a properly sized tap handle or tap wrench. Power down all equipment and secure the workpiece before beginning any tapping operation. Apply appropriate cutting fluid to extend tap life and improve thread finish. Do not force the tap; back off periodically to clear chips and prevent breakage, especially in blind holes.