PROJAHN HSS-Co Step Drill Bit with Spiral Flute 2 4-20mm | 76902

The PROJAHN HSS-Co Step Drill Bit with Spiral Flute 4-20 mm is designed for high-precision drilling and deburring. Made from high-speed steel with 5% cobalt (HSS-Co), this bit features spiral flutes and an edge breaker for smooth, burr-free work. The 3-surface grinding on the shank ensures optimal power transmission, while the sharp tip allows instant drilling without pre-drilling. Suitable for sheet metal, stainless steel, non-ferrous metals, and plastics, this drill bit combines durability and precision, making it an essential tool for professionals.

Specifications & Features:

• Material: High-speed steel with 5% cobalt (HSS-Co)
• Coating: Blank
• Diameter Range: 4-20 mm
• Total Length: 70 mm
• Shank Diameter: 9 mm
• Standards: PROJAHN standard
• Applications: Sheet metals, stainless steel, non-ferrous metals, plastics, plexiglass
• Design: Multi-step with spiral flutes, edge breaker
• Features: High running smoothness, optimal chip removal, burr and chatter mark-free work