Hertel K027758AS25 M10x1.50 Straight Flute Tap Bottoming Hss Tin

Product Description

The HERTEL K027758AS25 is a straight flute bottoming tap designed for cutting M10x1.50 metric coarse internal threads in blind holes where full thread depth at the bottom of the bore is required. Manufactured from high-speed steel (HSS) and finished with a titanium nitride (TiN) coating, this tap delivers improved surface hardness and wear resistance for extended tool life in production threading applications. With 4 flutes and a 6H class of fit, it produces accurate, clean threads suitable for standard metric fastener assemblies. Overall length is 2-15/16 inches. Thread direction is right hand.

This tap is suited for use in machine shops, maintenance and repair operations, and production environments where metric threaded holes are required in ferrous and non-ferrous materials. The bottoming chamfer allows threading to the base of blind holes, making it the correct choice when a plug or taper tap has already started the thread and full thread engagement at depth is needed. It is typically run in a drill press, tapping head, CNC machining center, or by hand with a tap wrench.

Key Features

• Bottoming chamfer for threading blind holes to full depth
• High-speed steel construction for durability across a range of workpiece materials
• TiN coating increases surface hardness and reduces friction for longer tool life
• 4 flutes provide a strong tool cross-section and consistent thread form
• 6H class of fit meets standard metric thread tolerance requirements
• Right hand thread, D6 thread limit for controlled fit

Compatibility

Designed as an OEM-style replacement or direct-use straight flute bottoming tap for M10x1.50 metric coarse threading operations in standard machining and repair applications.

Installation Notes

This tap is installed and operated by qualified machinists or maintenance technicians. Always ensure the correct tap drill size is used for M10x1.50 prior to tapping and that the workpiece is securely fixtured. Apply appropriate cutting fluid for the workpiece material to reduce heat and improve thread quality. When tapping blind holes, use caution not to force the tap beyond its travel limit to avoid breakage.