Hertel K008445AS Spiral Point Tap 3/8-16 Unc 3 Flute Hss

Product Description

The HERTEL K008445AS is a spiral point tap designed for threading 3/8-16 UNC holes in a wide range of metalworking applications. Built from high-speed steel (HSS) with a bright, uncoated finish, this tap drives chips forward ahead of the cutting edge, making it well-suited for through-hole tapping operations. The plug chamfer allows for gradual thread engagement, reducing stress at entry. With a H11 thread limit and an oversize specification of 0.0050 inches, it is sized for applications where controlled fit tolerance is required. The 3-flute geometry balances chip evacuation with cutting stability across common shop materials.

This tap is used in machine shop, manufacturing, and maintenance environments for tapping through holes in steel, aluminum, cast iron, and similar materials. The spiral point design pushes chips ahead rather than packing them behind the tap, which helps maintain clean thread formation during production runs. It is suited for use in CNC machining centers, drill presses, and tapping heads where consistent right-hand thread output is required at the 3/8-16 UNC specification.

Key Features

• 3/8-16 UNC thread size with right-hand thread direction
• Spiral point geometry pushes chips forward, ideal for through-hole tapping
• High-speed steel construction for durability across a range of common metals
• Plug chamfer for gradual thread engagement and reduced tap breakage risk
• H11 thread limit with 0.0050-inch oversize for controlled tolerance fitment
• Bright uncoated finish suitable for use with standard cutting fluids

Compatibility

Designed as a direct-use tap for through-hole threading operations producing 3/8-16 UNC right-hand threads in general machining and maintenance applications.

Installation Notes

Tapping operations should be performed by a qualified machinist or tool-and-die professional. Ensure the workpiece is securely fixtured before beginning the tapping cycle. Apply appropriate cutting fluid for the workpiece material to extend tap life and improve thread finish. Do not reverse the tap under power without confirming the tapping head or machine control supports reversing cycles, as improper reversal can result in tap breakage.