RUKO HGB DIN 2181 HSS 60° No. 6 Combination Drill and Countersink

Machinists and metalworkers who need a precise, clean start for a drilled hole will reach for this RUKO combination drill and countersink. It is built to DIN 2181 with a 60° countersink angle and a No. 6 size, making it a reliable choice for centering and spot drilling on steel, cast iron, and non-ferrous metals.

Key specifications

• Standard: DIN 2181
• Material: High-Speed Steel (HSS)
• Countersink angle: 60°
• Drill form: Form A (with protective chamfer)
• Size number: No. 6
• Pilot drill diameter (d1): 6.3 mm
• Countersink diameter (d2): 16 mm
• Overall length (l1): 63 mm
• Shank diameter (d3): 16 mm
• Cutting direction: Right-hand cut
• Surface treatment: Bright (uncoated)
• Manufacturing method: Ground
• Application type: Centering and spot drilling
• Packaging quantity: 1 piece

Why choose it

The HSS construction provides good wear resistance for a long service life, while the ground finish ensures accurate centering. The protective chamfer (Form A) helps prevent damage to the cutting edges during handling and use.

Ideal use cases

• Creating a starting point for twist drills on metal workpieces
• Spot drilling to prevent drill wandering on curved or uneven surfaces
• Producing a 60° chamfer for countersunk screws in steel or cast iron

Good to know

This tool is sold as a single piece. It is suitable for use with standard drill chucks that accept a 16 mm shank.