RUKO HGB-DIN2181-HSS-60°-7/16x Countersink Bit, 3-Flute, 7/16 inch Cutting Diameter, 8mm Shank, 56mm Length

RUKO's HGB-DIN2181-HSS-60°-7/16x countersink bit stands out with its precision-ground 60° cutting angle and 7/16 inch cutting diameter, tailored for clean chamfering and deburring in a wide range of materials. Unlike generic countersinks, this tool is manufactured to DIN 2181, ensuring consistent geometry and reliable performance in steel, cast iron, non-ferrous metals, and plastics.

Highlights

• High-speed steel (HSS) construction for durability and heat resistance
• Three-flute design for smooth, chatter-free countersinking
• Right-hand cutting direction for standard drilling machines
• Cylindrical shank with 8 mm diameter for secure chucking
• Bright (uncoated) surface for sharp cutting edges

In daily use

The 56 mm overall length provides good reach while maintaining rigidity. Its conical head design centers easily on pre-drilled holes, producing uniform chamfers and countersinks for flat-head screws. Suitable for both manual and CNC applications where a precise 60° countersink is required.

Full specifications

• Tool Type: Countersink
• Material: High-Speed Steel (HSS)
• Standard: DIN 2181
• Cutting Angle: 60°
• Cutting Diameter (D1): 7/16 inch (11.11 mm)
• Shank Type: Cylindrical Shank
• Shank Diameter (d2): 8 mm
• Overall Length (L1): 56 mm
• Number of Flutes: 3 Flutes
• Direction of Cut: Right-hand
• Primary Application: Deburring, Chamfering, Countersinking
• Compatible Materials: Steel, Cast Iron, Non-ferrous Metals, Plastics
• Surface Treatment: Bright (Uncoated)
• Manufacturing Method: Ground
• Head Design: Conical

Final note

A dependable countersink bit for professionals who need exact, repeatable results in everyday machining tasks.