Hertel K008181AS Straight Flute Tap 8-32 Unc Hss

Product Description

The HERTEL K008181AS is a straight flute plug tap designed for cutting 8-32 UNC internal threads in through-holes and shallow blind holes. Manufactured from high-speed steel with a bright, uncoated finish, this tap delivers reliable thread-cutting performance in a wide range of ferrous and non-ferrous materials. It features 4 straight flutes and a plug chamfer, which distributes cutting load across several leading threads for smooth entry. Overall length is 2.125 inches, thread length is 0.75 inches, and shank diameter is 0.1680 inches. A standard H1 thread limit ensures close dimensional tolerance on finished threads.

This tap is suited for production and maintenance applications in machine shops, fabrication facilities, and field repair settings. The 8-32 UNC thread form is one of the most common machine screw sizes in North American trade work, appearing in electrical enclosures, HVAC equipment panels, control boards, and light mechanical assemblies. The plug chamfer makes it appropriate as a general-purpose starting tap in most tapping scenarios. Installation is performed by licensed machinists, maintenance technicians, or experienced trades professionals using a standard tap wrench or tapping head.

Key Features

• 4 straight flutes for chip clearance in through-hole and shallow blind-hole applications
• Plug chamfer distributes cutting load over multiple leading threads for controlled entry
• High-speed steel construction provides durability across a broad range of work materials
• Bright, uncoated finish for general-purpose use without specialized cutting fluid requirements
• H1 thread limit for tight tolerance control on 8-32 UNC threads
• Right-hand thread direction, standard for the vast majority of tapping applications

Compatibility

Designed as an OEM-style replacement or standard production tap for any application requiring 8-32 UNC right-hand internal threads.

Installation Notes

This tap is installed by machinists or maintenance trades using a tap wrench, tapping handle, or machine tapping head. Always drill the correct tap drill size for 8-32 UNC prior to tapping and ensure the workpiece is securely fixtured. Apply a suitable cutting fluid to extend tool life and improve thread finish. Do not force or back-drive the tap in hard materials, as high-speed steel taps are brittle and susceptible to breakage under torsional overload.