Hertel K029508AS Metric Coarse Tap Set M5 X 0.80 Hss

Product Description

The HERTEL K029508AS is a 3-piece metric coarse tap set designed for cutting right-hand internal threads in metal workpieces. Built from high-speed steel (HSS) with a bright, uncoated finish, the set covers all three chamfer styles in a single package: taper, plug, and bottoming. Each tap features 4 flutes for efficient chip evacuation and is ground to a D4 thread limit with a 6H class of fit, making it suitable for standard metric threaded fastener applications. The overall length of each tap is 2.375 inches. Machinists, tool-and-die workers, and maintenance technicians rely on this set for complete threading sequences from starting the thread to finishing in blind holes.

This tap set is intended for M5 x 0.80 metric coarse threads, one of the most common fastener thread sizes in general metalworking, automotive, and industrial maintenance environments. The three-tap progression allows the user to taper-start the thread, continue with the plug tap for most of the depth, and finish flush to the bottom of a blind hole using the bottoming tap. It is appropriate for use in drill presses, CNC machines, and manual tapping operations on steel, aluminum, cast iron, and similar machinable metals.

Key Features

• 3-piece set includes taper, plug, and bottoming chamfer styles for complete threading sequences
• M5 x 0.80 metric coarse thread form for one of the most widely used fastener sizes
• 4-flute geometry supports efficient chip removal in through and blind hole applications
• High-speed steel construction provides durability across a range of machinable metals
• D4 thread limit and 6H class of fit meet standard metric tolerance requirements
• Bright uncoated finish suitable for use with cutting fluids on ferrous and non-ferrous materials

Compatibility

Designed for cutting M5 x 0.80 metric coarse right-hand internal threads. Compatible with standard tap holders, T-handle wrenches, and machine tap chucks sized for the tap shank diameter.

Installation Notes

Tap installation should be performed by a qualified machinist or maintenance technician familiar with thread-cutting procedures. Always use the correct tap drill size for M5 x 0.80 threads and secure the workpiece firmly before tapping. Apply appropriate cutting fluid throughout the operation to extend tool life and improve thread quality. Follow the taper-to-plug-to-bottoming sequence when threading blind holes to avoid tap breakage.