Hertel K008259AS Straight Flute Tap 10-32 Unf Hss Plug

Product Description

The HERTEL K008259AS is a straight flute plug tap designed for cutting 10-32 UNF internal threads in through-holes and blind holes where chip evacuation is straightforward. Manufactured from high-speed steel (HSS) with a bright, uncoated finish, this tap delivers consistent thread form in a wide range of ferrous and non-ferrous materials. The plug chamfer — typically 3 to 5 threads — makes it the standard choice for general-purpose tapping in production and maintenance environments. With an overall length of 2.375 inches and a thread length of 0.875 inches, it fits standard tap handles and machine tool holders used by machinists, maintenance mechanics, and trade professionals working on light-gauge threaded assemblies.

This tap is suited for hand tapping and machine tapping operations on 10-32 UNF threaded holes in residential and commercial trade applications, including electrical enclosure hardware, HVAC equipment fasteners, panel assemblies, and small-bore plumbing and mechanical components. The 2-flute straight geometry works best in shorter through-holes and materials that produce breakable chips. The H1 thread limit ensures the finished thread stays within tolerance for standard UNF class-2B and class-3B fit requirements.

Key Features

• 10-32 UNF thread form with right-hand thread direction
• Plug chamfer for general-purpose through-hole and blind-hole tapping
• 2-flute straight geometry handles breakable chips efficiently
• H1 thread limit for accurate UNF tolerance control
• High-speed steel construction for durability across common work materials
• Bright, uncoated finish — compatible with most cutting fluids

Compatibility

Designed as a standard replacement or stock tap for any application requiring a 10-32 UNF, H1, plug-chamfer straight flute tap in HSS. Fits standard tap handles, T-handle wrenches, and machine tap holders accepting a 0.194-inch shank diameter.

Installation Notes

This tap is installed by machinists and maintenance trades using standard hand tap wrenches or tapping machines. Always use appropriate cutting fluid for the work material and ensure the tap is started square to the hole to avoid thread damage or tap breakage. For machine tapping, set spindle speed appropriate to the material and tap size. Secure the workpiece firmly before beginning the tapping operation.