Guhring 9027910080000 Spiral Flute Tap M8 X 1.25

Product Description

The GUHRING 9027910080000 is a spiral flute tap designed for blind hole threading in metric applications. Built from cobalt high-speed steel with a bright, uncoated finish, this tap handles M8 x 1.25 threads to a 6H class of fit. The bottoming chamfer style allows threading close to the bottom of blind holes, making it well suited for tight-tolerance work on alloyed and unalloyed steel. A 40-degree helix angle and fast flute style help clear chips efficiently during the tapping operation. Licensed machinists and toolroom technicians are the primary users of this tap in production and maintenance environments.

This tap is intended for blind hole threading in ferrous materials, specifically alloyed and unalloyed steel. The bottoming chamfer leaves minimal unthreaded length at the base of the hole, which is critical when fastener engagement depth is constrained. With a right-hand flute and right-hand thread configuration, it is compatible with standard tapping heads, CNC machining centers, and manual tap handles that accept a 6.00 mm shank diameter. Thread limit rating of D4 and D5 supports standard 6H tolerance class requirements.

Key Features

• Bottoming chamfer for threading to the bottom of blind holes
• Cobalt high-speed steel construction for durability in steel applications
• 40-degree helix angle with fast flute style for efficient chip evacuation
• 6H class of fit with D4 and D5 thread limits for tight-tolerance threading
• Bright, uncoated finish — no coating buildup to affect thread dimension
• Right-hand flute and right-hand thread for compatibility with standard tapping setups

Compatibility

Designed for blind hole threading in alloyed and unalloyed steel, this tap is compatible with standard tapping equipment accepting a 6.00 mm shank diameter and is rated for use in GUHRING Series 2791 applications.

Installation Notes

This tap should be installed by machinists or maintenance technicians familiar with tapping operations. Power down or disengage any CNC or power tapping equipment before loading or removing the tap. Always confirm the correct tap drill size for the M8 x 1.25 thread form before drilling the pilot hole. Use appropriate tapping fluid for steel applications and never reverse the tap under power in a blind hole without confirming chip clearance.