Hertel K011092AS Straight Flute Tap 3/8-16 Unc Hss

Product Description

The HERTEL K011092AS is a straight flute tap designed to cut internal threads in a wide range of materials. Built from high-speed steel with a bright, uncoated finish, it cuts 3/8-16 UNC right-hand threads to a 2B class of fit with an H5 thread limit. The plug chamfer style, combined with three straight flutes, makes this tap well suited for through-hole threading applications where chips can be pushed ahead and cleared efficiently. With an overall length of 2-15/16 inches, it fits standard tap holders and chucks used in manual, CNC, and drill-press operations. Machinists, tool-and-die workers, and maintenance technicians use this tap for production and repair threading jobs.

This tap is appropriate for threading through holes in mild steel, aluminum, brass, cast iron, and similar machinable materials. The 3/8-16 UNC thread size is one of the most common coarse-thread profiles in North American manufacturing and maintenance applications. The plug chamfer provides a gradual lead-in that distributes cutting load across the first several threads, reducing tap breakage risk in general-purpose through-hole work. It is sold individually and is a direct fit for standard 3/8-inch tap drive tooling.

Key Features

• 3/8-16 UNC thread form, right-hand cut, for common coarse-thread through-hole applications
• High-speed steel construction provides durability across a broad range of machinable materials
• Plug chamfer (7-10 threads of lead) reduces cutting pressure and minimizes tap breakage in through holes
• H5 thread limit ensures consistent 2B class of fit compliance for standard fastener mating
• Three straight flutes allow chip clearance in through-hole threading operations
• Bright, uncoated finish for general-purpose use without coating considerations

Compatibility

Designed as an OEM-style straight flute tap for standard 3/8-inch tap holders, T-handle wrenches, and CNC rigid-tap tooling that accepts this drive size.

Installation Notes

A licensed machinist or qualified maintenance technician should operate this tap in accordance with applicable shop safety standards. Always secure the workpiece before tapping and use a cutting fluid appropriate to the workpiece material to extend tool life and improve thread finish. Ensure the tap is properly aligned to the drilled hole to prevent tap breakage. Do not exceed the recommended drill size for a 3/8-16 UNC thread when preparing the pilot hole.