Hertel K020299AS Spiral Point Tap M12x1.25 Metric Fine Hss

Product Description

The HERTEL K020299AS is a spiral point tap designed for cutting M12x1.25 metric fine internal threads in through-hole applications. The plug chamfer drives chips forward ahead of the cutting action, making it well suited for production tapping in materials where chip evacuation is critical. Manufactured from high-speed steel with a bright uncoated finish, the tap features 3 flutes and a right-hand thread direction. The thread limit is D3, controlling tolerance for standard metric fine fits. Shank diameter is 0.367 inches, and thread length is 1-21/32 inches. Total weight is 0.2 pounds.

This tap is used in machine shop and maintenance applications wherever M12x1.25 metric fine threads are required in through-holes. Common installation environments include automotive component repair, precision equipment assembly, and general metalworking operations. The spiral point design is particularly effective in CNC tapping centers and drill presses where consistent chip control improves thread quality and tool life. This tap is not intended for blind-hole applications where chip evacuation forward is not possible.

Key Features

• M12x1.25 metric fine thread form for precision thread applications
• Spiral point geometry pushes chips forward, ideal for through-hole tapping
• 3-flute design provides balanced cutting action and chip flow
• Plug chamfer for standard through-hole starts
• High-speed steel construction for durability across a range of workpiece materials
• D3 thread limit for controlled tolerance on metric fine fits
• Bright uncoated finish suitable for use with cutting fluids

Compatibility

Designed as an OEM-style replacement or standard tooling option for any application requiring M12x1.25 metric fine right-hand internal threads in through-hole configurations.

Installation Notes

Installation requires a compatible tap holder or tapping chuck sized for a 0.367-inch shank diameter. Always apply cutting fluid appropriate for the workpiece material before and during tapping. Ensure the workpiece is securely fixtured and the tap is properly aligned to the drilled hole to prevent tap breakage. Follow applicable shop safety procedures and machine tool manufacturer guidelines when operating tapping equipment.