RUKO ZEB-HSS-DIN333-A-2.5mm Center Drill Bit, HSS, 2.5 mm Body Diameter, 60° Point Angle, DIN 333 A

Precision-ground from high-speed steel to DIN 333 A, this RUKO center drill bit combines a 2.5 mm body diameter with a 60° point angle for exact centering in turning and grinding operations.

Overview

The RUKO ZEB-HSS-DIN333-A-2.5mm is a center drill bit engineered for creating precise center holes in workpieces prior to turning, grinding, or as pilot holes for twist drills. Its cylindrical shank fits standard drill chucks, and the bright, uncoated surface reduces friction and improves chip evacuation. With an overall length of 45 mm and a pilot hole diameter of 1.0 mm, it delivers accurate, repeatable results in metalworking applications.

What stands out

• High-speed steel construction for durability and heat resistance
• DIN 333 A geometry with 60° point angle for standard center holes
• Body diameter tolerance h8 ensures consistent sizing
• Right-hand cutting direction for conventional drilling
• Sold as a single piece for individual replacement

Technical details

• Drill Bit Type: Centering drill bit
• Standard: DIN 333 A
• Material: High-Speed Steel (HSS)
• Body Diameter (d1): 2.5 mm
• Pilot Hole Diameter (d2): 1.0 mm
• Overall Length (l1): 45 mm
• Pilot Hole Length (l2): 1.2 mm
• Point Angle: 60°
• Shank Type: Cylindrical
• Cutting Direction: Right-hand cutting
• Surface Treatment: Bright (Uncoated)
• Tolerance (Body Diameter): h8
• Application: For creating precise center holes for turning, grinding, or as pilot holes for twist drills.
• Manufacturer Series: ZEBRA
• Packaging Unit: 1 Piece

Our verdict

A reliable center drill bit for machinists and metalworkers who demand precision and longevity. Its DIN 333 A compliance and HSS construction make it a solid choice for professional workshops.