Hertel K027765AS M12x1.75 Straight Flute Tap 4 Flutes Hss

Product Description

The HERTEL K027765AS is a straight flute tap designed for cutting M12x1.75 metric coarse internal threads in a wide range of metalworking and machining applications. Built from high-speed steel with a bright uncoated finish, this plug chamfer tap produces clean, accurate threads in through-holes and blind holes where chip flow is not a critical constraint. The 6H class of fit and D6 thread limit deliver the tolerance control required for standard metric fastener assemblies. With four flutes and a 3.375-inch overall length, this tap suits production and maintenance environments alike. Licensed machinists and tool-and-die tradespeople will find it appropriate for manual and machine tapping operations.

This tap is intended for right-hand M12x1.75 metric coarse threaded applications in ferrous and non-ferrous metals. The plug chamfer style provides a moderate lead-in, making it suitable for both through-hole and sufficiently deep blind-hole tapping. It fits standard tap holders and CNC tapping heads that accept the corresponding shank diameter. Common use cases include machine shops, MRO work, and field maintenance where metric fastener threads need to be cut or restored.

Key Features

• M12x1.75 metric coarse thread form with 6H class of fit and D6 thread limit for standard tolerance control
• High-speed steel construction provides durability across a broad range of workpiece materials
• Plug chamfer lead-in accommodates through-hole and deep blind-hole tapping
• Four straight flutes support chip clearance in shorter-cut applications
• Bright uncoated finish suitable for use with cutting fluid or tapping compounds
• Right-hand thread direction for standard tapping operations

Compatibility

Designed as a standard replacement or direct-use straight flute tap for M12x1.75 metric coarse thread applications. Compatible with tap holders and machine spindles sized for this tap shank configuration.

Installation Notes

Tapping should be performed by a qualified machinist following standard thread-cutting procedures. Always use an appropriate cutting fluid or tapping compound for the workpiece material to extend tool life and improve thread quality. Secure the workpiece fully before beginning the tapping operation and ensure the tap is aligned perpendicular to the work surface. Inspect the tap for wear or chipping before each use; a damaged tap can produce out-of-tolerance threads or break in the hole.