Hertel K008294AS Straight Flute Tap 12-24 Unc Hss

Product Description

The HERTEL K008294AS is a straight flute tap designed for cutting internal threads in a wide range of machining and fabrication applications. Built from high-speed steel with a bright, uncoated finish, this plug-chamfer tap produces a 12-24 UNC right-hand thread and is suited for Class of Fit 2B and 3B work. The H3 thread limit provides a consistent tolerance for standard fastener fits. With 4 flutes and an overall length of 2.375 inches, the K008294AS is sized for hand tapping and light machine tapping operations in through-hole and shallow blind-hole applications.

This tap is commonly used in general metalworking, maintenance and repair, and production environments where 12-24 UNC threaded holes are required. The plug chamfer, with its moderate lead-in, makes it appropriate for starting in a drilled hole and running through most of the hole depth. It is a standard choice for machinists, tool and die workers, and maintenance technicians working with steel, aluminum, brass, and similar machinable materials. Package quantity is 1 tap.

Key Features

• 12-24 UNC straight flute configuration for internal thread cutting in through and shallow blind holes
• High-speed steel construction provides durability across a range of machinable metals
• Bright, uncoated finish suits general-purpose applications where coating is not required
• Plug chamfer with 3 to 5 lead threads for easy hole entry and alignment
• H3 thread limit for consistent 2B and 3B class of fit results
• Right-hand thread direction; compatible with standard tap wrenches and tapping heads

Compatibility

Designed as a standard straight flute plug tap for through-hole and shallow blind-hole threading in 12-24 UNC applications across general machining and maintenance work.

Installation Notes

Installation is performed by machinists or maintenance technicians using a calibrated tap wrench or tapping head. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill size for 12-24 UNC threads before beginning. Apply cutting fluid appropriate to the workpiece material to reduce heat and extend tool life. Back the tap out periodically to break chips and clear flutes, particularly in deeper holes.