Guhring 9039030050000 Spiral Flute Tap M5 X 0.80 Cobalt

Product Description

The GUHRING 9039030050000 is a spiral flute tap designed for threading blind holes in a wide range of materials. Built from cobalt high-speed steel with a bright, uncoated finish, this tap handles M5 x 0.80 metric coarse threads to a 6H class of fit. The 3-flute, right-hand configuration features a 40-degree helix angle and a modified bottoming chamfer, allowing threads to be cut close to the bottom of a blind hole. At 2.375 inches overall length, it fits standard tapping chucks and holders used in production and maintenance machining environments. Licensed machinists, toolroom technicians, and maintenance mechanics are the primary users.

This tap is rated for blind hole threading across a broad material range including aluminum and other non-ferrous metals, gray cast iron, malleable and spheroidal iron, and steel. The fast flute style efficiently evacuates chips upward during the threading cycle, making it well suited for CNC tapping centers and rigid tapping operations on machining centers or drill presses. It is part of the GUHRING Series 3903 and carries a D3-D4 thread limit, which provides the tolerance needed for standard 6H fits in production environments.

Key Features

• M5 x 0.80 metric coarse thread form to 6H class of fit with D3-D4 thread limit
• Modified bottoming chamfer allows threading near the bottom of blind holes
• 40-degree helix angle with fast flute style for efficient upward chip evacuation
• Cobalt construction provides heat and wear resistance across ferrous and non-ferrous materials
• Right-hand flute and right-hand thread for use with standard tapping equipment
• Bright, uncoated finish suitable for use with a wide range of cutting fluids and lubricants

Compatibility

Rated for aluminum and other non-ferrous metals, gray cast iron, malleable and spheroidal iron, and steel. Designed as an OEM-specification replacement or direct-use tap for M5 x 0.80 metric coarse blind hole applications in standard 6H tolerance work.

Installation Notes

This tap should be installed by a qualified machinist or toolroom technician using a calibrated tapping chuck or rigid tapping holder. Always apply appropriate cutting fluid for the workpiece material before beginning the threading cycle. Confirm spindle direction and feed rate are set for right-hand threading before engaging the tap. Do not back-drive without chip clearance when working in blind holes, as chip packing can cause tap breakage.