RS PRO HSS Countersink Drill Bit, 10 mm Head Diameter, 90° Angle, 1 Piece, 48 mm Length, 215-439

RS PRO 215-439 HSS Countersink Drill Bit is a precision tool engineered for reliable deburring and chamfering of pilot holes. With a 10 mm head diameter, this drill bit is suitable for producing countersinks at a standard angle of 90 degrees, enabling flush mounting of flat head screws and improving surface finishes in assemblies.

Manufactured from high-speed steel (HSS), this drill bit provides exceptional resistance to wear and maintains cutting performance for both metal and wood applications. The single-piece construction is optimized for vibration-free operation, reducing chatter and ensuring clean, accurate chamfering at high production speeds. The 48 mm overall length and 8 mm shank diameter allow for compatibility with manual, electric, and cordless drills, as well as stationary machine tools and robot-based systems.

When installed in drill driver attachments with hexagonal or round shanks, the bit creates a chamfer around the rim of a pilot hole so countersunk screws sit flush or slightly below the material surface, preventing material damage and ensuring a neat finish. The robust design is also ideal for removing burrs left from drilling or tapping operations, making it a versatile addition to professional workshops.

Typical industrial and workshop applications include power drilling, maintenance, fabrication, assembling metal or wood panels, robotics integration, and production environments where quality surface finishes are essential. Its reliability in both production and repair operations makes it a cost-effective investment for engineers, technicians, and manufacturing teams.

Produced in China and supported by the RS PRO brand, this drill bit provides assured quality and performance and is packaged as a single piece, perfect for replenishment or custom tool selections.

Constructed from high-speed steel (HSS) for excellent durability and precision cutting. Features a 10 mm head diameter and a 90° countersink angle to suit standard pilot hole chamfering. Total length of 48 mm and an 8 mm shank diameter for compatibility with a wide range of drills.

Ideal for vibration-free deburring and chamfering on metal, wood, and other materials at production speeds. Perfect for use in power drills, robot systems, column drills, stationary machines, and machine tools. Single piece packaging makes it suitable for maintenance and workshop replenishment.

Designed for flush-fitting flat head screws, producing a conical hole for a smooth surface finish. Country of origin: China, ensuring consistent quality and manufacturing standards. Browse more industrial drill bits and power tool accessories from RS PRO in the Drill Bit section at EnvMart.