Hertel K008970AS Tap Set 10-24 Unc 4 Flute Hss 3 Pc

Product Description

The HERTEL K008970AS is a 3-piece tap set designed for cutting 10-24 UNC internal threads in metal workpieces. Built from high speed steel with a bright finish, this set delivers reliable cutting performance across a range of threading applications. The 4-flute geometry supports chip evacuation and thread quality in both through-hole and blind-hole configurations. Overall length is 2-3/8 inches, and the set covers Class of Fit 2B and 3B, making it suitable for standard commercial and precision thread tolerances. Thread limit is H2, appropriate for general-purpose tapping in steel, aluminum, and similar machinable materials.

This tap set is suited for machine shops, maintenance facilities, and field service environments where reliable UNC thread creation is required. The 10-24 UNC thread size is common in fastener applications across light machinery, electrical enclosures, and equipment assembly. The 3-piece set typically includes taper, plug, and bottoming taps, providing the complete sequence needed to start, advance, and finish threads in a variety of hole conditions.

Key Features

• 10-24 UNC thread size for standard unified coarse thread applications
• 4-flute design supports chip flow and consistent thread form
• High speed steel construction for durability across machinable metals
• Bright finish — no coating to interfere with close-tolerance thread limits
• H2 thread limit for general-purpose 2B and 3B class of fit requirements
• 3-piece set covers taper, plug, and bottoming sequences

Compatibility

Designed for use in standard 10-24 UNC tapping applications where Class of Fit 2B or 3B threads are specified in machinable ferrous and non-ferrous materials.

Installation Notes

Tapping should be performed by a machinist or qualified technician using a properly sized tap wrench, drill press, or CNC tapping head. Always drill the correct tap drill diameter before threading to avoid tap breakage or out-of-tolerance threads. Use appropriate cutting fluid for the workpiece material to extend tap life and improve thread finish. Secure the workpiece firmly before starting and back off periodically to break chips when tapping blind holes.