Hertel K008293AS Straight Flute Tap 12-24 Unc Hss

Product Description

The HERTEL K008293AS is a straight flute tap designed to cut 12-24 UNC internal threads in a wide range of materials. Built from high-speed steel with a bright, uncoated finish, this tap features four flutes and a taper chamfer that guides the tool into the workpiece for smooth thread engagement from the start. The overall length is 2.375 inches. The H3 thread limit and 2B/3B class of fit make it suitable for standard commercial thread tolerances where consistent fit and dimensional accuracy are required. Right-hand thread direction is standard for conventional tapping operations.

This tap is suited for general-purpose threading in machine shops, maintenance facilities, and production environments. The taper chamfer distributes the cutting load across several leading threads, making it a practical choice for through-hole applications and for starting threads in blind holes where enough clearance exists. It is sized for the number 12 screw diameter at 24 threads per inch, a thread form common in light mechanical assemblies, electrical enclosures, and instrumentation hardware. Installation is typically performed by machinists, maintenance technicians, or tool and die professionals.

Key Features

• 12-24 UNC thread form with right-hand direction for standard tapping operations
• Taper chamfer distributes cutting load across leading threads for easier thread starting
• Four flutes provide chip clearance and cutting efficiency in a range of materials
• High-speed steel construction offers good wear resistance across common workpiece materials
• H3 thread limit with 2B/3B class of fit meets standard commercial tolerance requirements
• Bright, uncoated finish suitable for use with cutting fluids across general-purpose applications

Compatibility

Designed as a standard replacement or stocking tap for 12-24 UNC threading applications in general machining and maintenance service environments.

Installation Notes

This tap is installed by machinists or maintenance technicians using a tap wrench, tapping head, or machine spindle. Always use an appropriate cutting fluid for the workpiece material to extend tool life and improve thread quality. Ensure the hole is drilled to the correct tap drill diameter for 12-24 UNC before threading. Back the tap out periodically to break chips when tapping deeper holes.