RUKO ZEB-HSS-DIN333-A-1.0mm Center Drill Bit

Machinists and metalworkers use this RUKO center drill bit to create precise 60° center holes in workpieces for secure mounting between centers on lathes or for accurate starting points when drilling. The 1.0 mm pilot diameter is ideal for small precision components in toolmaking and general machining.

Key specifications

• Drill bit type: Centering drill bit
• Material: High-Speed Steel (HSS)
• Standard: DIN 333 A
• Pilot hole diameter (d1): 1.0 mm
• Body diameter (d2): 3.15 mm
• Overall length (l1): 31.5 mm
• Cutting part length (l2): 3.5 mm
• Point angle: 60°
• Shank type: Cylindrical, tolerance h8
• Direction of cut: Right-hand
• Number of flutes: 2
• Surface finish: Bright / Uncoated
• Manufacturing process: Ground from solid
• Product series: Zebra
• Packaging quantity: 1 piece

Why choose it

Made from high-speed steel and ground from solid, this center drill offers excellent durability and precise centering. The 60° point angle conforms to DIN 333 A, ensuring compatibility with standard lathe centers and providing a reliable starting point for subsequent drilling operations.

Ideal use cases

• Creating center holes for turning between centers
• Pre-drilling starting points for twist drills
• Machining steel, cast iron, non-ferrous metals, and plastics

Good to know

The bright, uncoated finish reduces friction and allows for easy resharpening. The cylindrical shank with h8 tolerance fits standard drill chucks and collets. Suitable for use in machine tools and hand drills.