Hertel K008060AS Straight Flute Tap 3-48 Unc Bottoming Hss

Product Description

The HERTEL K008060AS is a straight flute bottoming tap designed for threading operations in ferrous and non-ferrous materials. It cuts a 3-48 UNC right-hand thread and is suited to threading holes close to the bottom, where a bottoming chamfer is required to maximize thread engagement depth. Built from high-speed steel with a bright, uncoated finish, this tap delivers reliable performance in short-run and production tapping applications. With a 0.5-inch thread length and an overall length of 1.8125 inches, it fits standard tap holders and T-handle wrenches used in manual and machine tapping setups. The H2 thread limit ensures dimensional control within industry-standard tolerance ranges for a 2B class of fit.

This tap is sized for the smallest common machine screw thread in the UNC series, making it a standard choice when threading 3-48 tapped holes in instrument housings, electronic enclosures, small mechanical assemblies, and precision hardware. The 3-flute straight flute geometry is well matched to through-hole and shallow blind-hole applications. It is installed by machinists, tool-and-die workers, maintenance technicians, and assembly personnel working on equipment requiring small-diameter machine screw threads.

Key Features

• Bottoming chamfer allows threading to the full depth of blind holes
• 3-48 UNC thread form with right-hand thread direction
• High-speed steel construction for durability across a range of workpiece materials
• Bright, uncoated finish suitable for use with standard cutting fluids
• H2 thread limit holds 2B class of fit tolerances
• 3 straight flutes for chip management in short-chipping materials

Compatibility

Designed as a standard 3-48 UNC bottoming tap compatible with T-handle tap wrenches, tapping attachments, and CNC tapping heads sized for small-diameter taps. No specific model compatibility data was provided by the manufacturer for this part.

Installation Notes

This tap is installed by machinists or technicians using a tap wrench, tapping head, or machine spindle rated for small-diameter taps. Always use a properly sized tap drill for a 3-48 UNC thread before tapping, and apply appropriate cutting fluid to reduce friction and extend tool life. Secure the workpiece firmly to prevent movement during the tapping operation. Reverse the tap periodically during hand tapping to break chips and prevent tap breakage in blind holes.