Hertel K029512AS Metric Coarse Tap Set 4 Flute Hss

Product Description

The HERTEL K029512AS is a 3-piece metric coarse tap set designed for threading operations in metal fabrication, maintenance, and repair work. Built from high speed steel (HSS) with a bright finish, this set handles metric coarse thread profiles across a range of tap types included in the set. The overall length of 2-15/16 inches suits standard tapping applications in bench or machine environments. The 6H class of fit delivers the tolerance control required for general-purpose metric threaded assemblies. Machinists, tool and die technicians, and maintenance mechanics are the typical users of this set.

This tap set is suited for production shops, maintenance facilities, and machine shops that work with metric coarse threaded holes. The 4-flute design supports use in through-holes and blind holes in steel, cast iron, aluminum, and similar machinable materials. The 6H class of fit is standard for most metric fastener applications, making this set a practical choice for general threading tasks without the need for specialty tooling.

Key Features

• High speed steel construction for durability across a range of workpiece materials
• Bright finish with no coating — suitable for use with cutting fluids
• 4-flute geometry for stable cutting action in through and blind holes
• 6H class of fit for standard metric tolerance control
• D6 thread limit for consistent fit with metric coarse fasteners
• 2-15/16 inch overall length fits standard tap wrenches and holders

Compatibility

Designed as an OEM-style replacement or standard addition to metric tap inventories for general-purpose threading in metric coarse thread profiles.

Installation Notes

Taps should be installed and used by qualified machinists or maintenance technicians familiar with threading operations. Secure the workpiece firmly before tapping, and apply an appropriate cutting fluid to extend tool life and improve thread quality. Start each tap square to the hole to avoid cross-threading or tap breakage. Inspect the tap for wear or damage before each use and replace if chipping or dulling is observed.