Expertly engineered for high-efficiency chamfering, de-burring, and centre-hole preparation paths in demanding manufacturing environments, the Guhring 60-Degree 3-Flute Straight Shank Countersink range is the definitive industrial choice for precision metalworking. Manufactured from premium high-speed steel (HSS), these tools feature a straight parallel shank optimized for secure, high-concentricity mounting in standard CNC collet chucks and conventional three-jaw drill holders. The specialized 60° angle is precision-ground to generate the exact seating profiles required for machine centres and specialized fasteners, while the advanced 3-flute geometry balances cutting forces to completely eliminate vibration and chatter. This ensures perfectly round, mirror-smooth chamfers even during aggressive manual or automated production cycles. This heavy-duty countersinking range is optimized to deliver exceptional tool life and uniform results across tough structural materials, including structural steels, mild steel, AS/NZS 3678 250 and 350 grade plate, free-cutting steels, and unalloyed case-hardened steels.

HSS APPLICATIONS

• Suitable for machine operations
• For Countersunk screws
• Chamfering of holes
• Suited for use in a variety of ferrous and non-ferrous materials

HSS TECHNICAL DATA

• Made from High Speed Steel
• Standard - DIN 334
• Guhring No. 472