Guhring 9056750127000 82 Deg 3 Flute Countersink 3/8 Shank

Product Description

The GUHRING 9056750127000 is a single-end, 3-flute countersink designed for precision countersinking in ferrous and hard-to-machine materials. Built from cobalt steel and finished with a TiAlN coating, this tool delivers elevated heat resistance and extended tool life compared to standard HSS countersinks. The included angle is 82 degrees, making it suitable for flathead fastener seating in metalworking and fabrication applications. The 3/8-inch shank features a 3-flat profile that locks securely in compatible chuck or holder systems, reducing slip during operation. No pilot is included. This is a complete countersink unit, not a head-only style.

This countersink is built for use in ferrous materials including cast iron, stainless steel, and carbon steel. It is a right-hand cutting tool suited for conventional drill press, CNC machining center, or handheld power tool use where a 3/8-inch shank is accepted. The TiAlN coating makes it a practical choice for production runs or repeated use on abrasion-prone materials where uncoated tooling wears prematurely. Typical users include machinists, tool and die technicians, and metalworking fabricators.

Key Features

• 82-degree included angle for standard flathead fastener countersinking
• 3-flute geometry for smooth, chatter-resistant cutting action
• Cobalt steel construction provides heat and wear resistance
• TiAlN coating extends tool life in stainless steel and cast iron
• 3/8-inch, 3-flat shank resists rotation in the holder
• Single-end design with no pilot included

Compatibility

Rated for use in cast iron, stainless steel, and steel workpieces. Accepts any chuck or collet holder sized for a 3/8-inch shank diameter.

Installation Notes

Installation is performed by machinists or toolroom technicians. Secure the 3-flat shank firmly in a compatible chuck or toolholder before operation to prevent slippage. Power down and de-energize all machinery before inserting or removing the tool. Use appropriate cutting fluid for the workpiece material, particularly when working with stainless steel, to manage heat buildup and extend tool life.