Dormer High Speed Steel Countersink Drill Bit 6.3 mm Head Diameter, 3 Flute, 90° Angle, 45 mm Length G1366.3

Dormer G1366.3 High Speed Steel Countersink Drill Bit features a 6.3 mm head diameter, 3 flute design, and 90° countersink angle, making it essential for precision work in drilling and finishing applications.

This countersink bit is constructed from high speed steel (HSS) which provides exceptional hardness and wear resistance. The triple flute cutter design ensures efficient chip clearance compared to four-flute variants, significantly reducing clogging during operation. The 90° angle is ideal for creating countersunk holes that allow screw heads, bolts, or rivets to sit flush with or below the surface, producing a neat, professional finish.

Its smooth, straight shank measuring 5 mm diameter allows easy attachment to power drills and battery drills (note: not compatible with SDS drills). With an overall length of 45 mm, it is practical for a variety of applications including woodworking, metalworking, and plastic fabrication.

Typical users include professional tradesmen, engineers, and hobbyists looking for precise countersinking performance. This bit can also be employed as a deburring tool to clean edges and improve surface quality.

Manufactured to the DIN 335C standard, the Dormer G1366.3 delivers consistent quality and reliable performance in industrial, construction, manufacturing, HVAC, and workshop environments.

Constructed from high speed steel for excellent hardness and durability. Features a 90° countersink angle enabling flush finish of screws, bolts, or rivets. Triple flute design improves chip clearance and prevents clogging.

Suitable for use on a variety of materials including wood, plastic, and metals. Overall length is 45 mm with a 5 mm shank diameter for secure fitting. Can be used as a deburring tool for a smooth finish. Manufactured to DIN 335C standards ensuring quality and reliability.

This countersink drill bit is an invaluable tool for precision countersinking in mechanical, industrial production, woodworking, and fastening applications. Its robust construction and efficiency in chip clearance contribute to high-quality finishes and extended tool life.

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