Guhring 9048840080050 Spiral Flute Tap M8x1 Cobalt

Product Description

The GUHRING 9048840080050 is a spiral flute tap designed for blind hole threading in a wide range of metals. It features a cobalt construction with an Ignator finish, a modified bottoming chamfer, and a 40-degree helix angle that efficiently evacuates chips upward out of the hole. The 3-flute, right-hand spiral geometry produces clean, accurate threads to a 6H class of fit with a D5 thread limit. Overall length is 2.72 inches, with a tapping depth of 1.377 inches and a shank diameter of 0.318 inches. This tap is built for production environments where blind hole accuracy and tool life in difficult materials are priorities.

This tap is suited for threading blind holes in alloy steel, alloy tool steel, aluminum alloy, case-hardened steel, cast iron, ductile iron, free-cutting steel, heat-treated steel, malleable cast iron, stainless steel, structural steel, and tool steel. The fast flute style and 40-degree helix make it well matched to CNC machining centers and manual tapping operations where chip control in confined holes is critical. It is a Series 4884 tool from GUHRING and ships in single-unit quantities.

Key Features

• Modified bottoming chamfer for threading close to the bottom of blind holes
• 40-degree helix angle for upward chip evacuation in blind hole applications
• Cobalt construction with Ignator finish for extended tool life in hard and abrasive materials
• 6H class of fit and D5 thread limit for precision metric fine thread production
• Right-hand flute and right-hand thread geometry
• No coolant-through requirement — compatible with standard tapping setups

Compatibility

Designed for blind hole threading of M8x1 metric fine threads across a broad range of ferrous and non-ferrous materials including alloy steel, stainless steel, aluminum alloy, cast iron, and tool steel.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the workpiece is securely fixtured and the spindle is properly aligned before engagement to avoid tap breakage. Power down or de-energize the machine before changing tooling. Follow the tap manufacturer and machine tool builder recommendations for cutting fluid selection, spindle speed, and feed rate appropriate to the workpiece material and hole depth.