RUKO HGB Set DIN 2181 HSS 60° Centre Drills No. 1-5 (5 Pieces)

Machinists and metalworkers rely on precise centre holes to start drilling operations accurately on lathes and milling machines. This RUKO HGB set provides five centre drills in a robust plastic case, covering sizes No. 1 through No. 5 according to DIN 333 A. The 60° countersink angle and 118° drill point create clean, concentric starting points for subsequent machining.

Key specifications

• Material: High-Speed Steel (HSS)
• Standard: DIN 333 A
• Countersink angle: 60°
• Drill point angle: 118°
• Set contents: No. 1, No. 2, No. 3, No. 4, No. 5
• Drill diameter range: 1.0 mm – 4.0 mm
• Countersink diameter range: 3.15 mm – 8.0 mm
• Shank type: Cylindrical
• Surface: Bright (uncoated)
• Cutting direction: Right-hand
• Manufacturing method: Precision ground
• Packaging: Robust plastic case

Why choose it

Precision ground from HSS, these centre drills maintain sharp cutting edges for accurate centring in steel, cast iron, non-ferrous metals, and plastics. The set covers a practical range of sizes, making it a versatile addition to any workshop.

Ideal use cases

• Creating centre holes for turning between centres
• Pre-drilling for accurate hole positioning
• Preparing workpieces for grinding operations

Good to know

The DIN 333 A standard defines the geometry of these centre drills, ensuring compatibility with standard tooling. The bright finish offers a clean surface without additional coatings.