Hardware Specialist S90-61 MARS M2 HSS 3-Flute 90 degree Countersink Drill Bit

Hardware Specialist S90-61 MARS M2 HSS 3-Flute 90 degree Countersink Drill Bit

The MARS S90-61 HSS Countersink Drill Bit is designed for producing 90-degree countersinks in drilling applications where a clean recess is required for countersunk fasteners. Manufactured from M2 high speed steel, it is made to the DIN 335C standard and features three flutes for the cutting operation. The S90-61 series is available in eight countersink sizes from 6.0mm to 31.0mm, with shank diameters and overall lengths varying by size. The 6.0mm version has a 5mm shank and 45mm total length, while the largest 31.0mm version has a 12mm shank and 71mm total length. Intermediate sizes include 8.0mm, 10.0mm, 12.4mm, 16.5mm, 19.0mm, and 25.0mm. These countersink drill bits are suitable for workshop, fabrication, maintenance, and general metalworking applications where countersinking is required. The three-flute design supports controlled cutting and efficient removal of material while creating a consistent countersink profile. The range provides multiple size choices to match different fastener and hole requirements.

Features

• M2 HSS construction
• Manufactured to DIN 335C standard
• 90° countersink design
• Three-flute cutting configuration
• Available in eight size options
• Shank diameter varies by countersink size
• Suitable for countersinking applications

Specification

• Brand: Hardware Specialist
• Product Type: Countersink Drill Bit
• Model: S90-61
• Material: M2 High Speed Steel
• Standard: DIN 335C
• Countersink Angle: 90°
• Number of Flutes: 3