RUKO HGB-Set-DIN2181-HSS-60°-Nr.5x Center Drill Set, 5 Pieces, HSS, 60°

Machinists and metalworkers rely on precise centering before drilling or turning. This RUKO center drill set provides five DIN 2181 Form A center drills in high-speed steel, each with a 60° countersink angle and protective chamfer. Sizes No. 1 through No. 5 cover pilot diameters from 1.0 mm to 4.0 mm, suitable for steel, cast iron, non-ferrous metals, and plastics. The bright, uncoated finish and ground profile ensure accurate, chatter-free starts in manual or CNC operations.

Key specifications

• Standard: DIN 2181, Form A
• Material: High-speed steel (HSS)
• Countersink angle: 60°
• Number of pieces: 5
• Included sizes: No. 1, No. 2, No. 3, No. 4, No. 5
• Pilot diameters: 1.0 mm, 1.6 mm, 2.5 mm, 3.15 mm, 4.0 mm
• Body diameters: 3.15 mm, 4.0 mm, 5.0 mm, 6.3 mm, 8.0 mm
• Shank type: Cylindrical
• Cutting direction: Right-hand
• Surface finish: Bright (uncoated)
• Packaging: Plastic storage case

Why choose it

Ground from solid HSS for concentricity and edge retention, these center drills produce accurate 60° centers for subsequent machining. The protective chamfer on Form A reduces edge chipping, extending tool life. The set covers common workpiece sizes, making it a versatile addition to any workshop.

Ideal use cases

• Creating center holes for lathe work between centers
• Spot drilling prior to twist drilling for improved accuracy
• Preparing workpieces for grinding or other precision operations

Good to know

Store the drills in the supplied plastic case to protect the sharp cutting edges. Use appropriate speeds and feeds for HSS when working with different materials.