Hertel K020235AS25 Spiral Point Tap M8x1.00 Metric Fine

Product Description

The HERTEL K020235AS25 is a spiral point tap designed for cutting M8x1.00 metric fine threads in through-hole applications. Built from high-speed steel (HSS) with a titanium nitride (TiN) coating, it delivers improved wear resistance and longer tool life compared to uncoated taps. The two-flute spiral point geometry pushes chips forward ahead of the cutting zone, keeping the flutes clear during machining. The plug chamfer provides a gradual lead-in and is well suited for most standard through-hole tapping operations in ferrous and non-ferrous materials. Machinists and toolroom technicians use this tap in CNC machines, drill presses, and hand-tapping setups.

This tap is used in production and maintenance machining environments where M8x1.00 metric fine threads are required. The metric fine pitch makes it appropriate for applications that demand finer thread engagement than a coarse-pitch M8 tap provides, such as precision assemblies, thin-walled components, and adjustable mechanical fittings. Right-hand thread direction is standard for conventional tapping operations. The D3 thread limit designation indicates the tolerance class of the tapped thread, which is relevant when matching to specific mating fastener tolerances.

Key Features

• M8x1.00 metric fine thread form with right-hand cutting direction
• Two-flute spiral point design pushes chips forward for clean through-hole tapping
• TiN coating increases surface hardness and reduces friction at the cutting edge
• High-speed steel construction handles a wide range of workpiece materials
• Plug chamfer for standard lead-in on through-hole work
• D3 thread limit for controlled tolerance on the finished thread

Compatibility

Designed as a direct-use metric fine spiral point tap for through-hole tapping of M8x1.00 threads in compatible toolholders and tapping chucks accepting a 0.318 inch shank diameter.

Installation Notes

Installation and use of this tap should be performed by a qualified machinist familiar with tapping feeds, speeds, and cutting fluid selection for the workpiece material. Always secure the workpiece and verify spindle alignment before tapping to avoid tap breakage. Use an appropriate cutting fluid or tapping compound to extend tool life and improve thread quality. Inspect the tap for wear or chipping before each use and replace if cutting edges show damage.