Guhring 9039050048260 Spiral Flute Tap 10-32 Unf

Product Description

The GUHRING 9039050048260 is a cobalt spiral flute tap designed for blind hole threading in a range of ferrous and non-ferrous materials. Built to 10-32 UNF specifications with a 2B class of fit, this tap uses a modified bottoming chamfer to cut threads close to the bottom of a blind bore. The 40-degree helix angle and fast flute style help evacuate chips efficiently during the tapping cycle. At 2.382 inches overall length with a 0.194-inch shank diameter, it fits standard tap holders and chucks used in CNC and manual machining setups. Machinists and toolroom technicians are the primary users.

This tap is suited for threading blind holes in aluminum and other non-ferrous metals, gray cast iron, malleable and spheroidal iron, and steel. The modified bottoming chamfer makes it appropriate where full threads are required close to the bottom of a hole with limited clearance. It belongs to the GUHRING Series 3905 and is packaged as a single unit, making it a practical choice for job shop, maintenance, and production machining environments where individual replacement taps are needed.

Key Features

• Modified bottoming chamfer for threading close to the bottom of blind holes
• Cobalt construction for improved heat and wear resistance compared to standard HSS
• 40-degree helix angle with fast flute style for efficient chip evacuation
• 2B class of fit for standard tolerance threaded assemblies
• Right-hand flute and right-hand thread — compatible with standard tapping setups
• Bright/uncoated finish — no coating buildup to affect critical thread tolerances

Compatibility

Designed as an OEM-style replacement or direct-use tap for 10-32 UNF blind hole threading applications in materials including aluminum and other non-ferrous metals, gray cast iron, malleable and spheroidal iron, and steel.

Installation Notes

Tap installation and use should be performed by a qualified machinist or toolroom technician familiar with standard tapping procedures. Ensure the spindle or tap holder is properly aligned before engaging the workpiece to avoid tap breakage. Coolant-through is not supported on this tap, so apply cutting fluid manually or via flood coolant at the entry point when working with harder materials. Always verify pilot hole diameter against the appropriate drill chart for 10-32 UNF before tapping.