RUKO STB-HSS-6,0-12,0mm punta a gradini

Step drill bit made of high-speed steel (HSS) for drilling, enlarging and deburring in sheet metal, non-ferrous metals, plastics and thin steel up to 4 mm thick. The 6-step design covers a diameter range from 6.0 to 12.0 mm in 1.0 mm increments, allowing multiple hole sizes with a single tool.

Advantages

Single cutting edge with a 118° point angle ensures clean, precise holes. Straight flute design provides effective chip evacuation. Bright, uncoated finish reduces friction and heat build-up. Cylindrical 6 mm shank fits standard drill chucks.

Suitable for

• Sheet metal
• Non-ferrous metals
• Plastics
• Thin steel up to 4 mm

Key specifications

• Material: High-Speed Steel (HSS)
• Drilling diameter range: 6.0 – 12.0 mm
• Number of steps: 6
• Step increments: 1.0 mm
• Shank type: Cylindrical, 6 mm
• Total length: 66 mm
• Working length: 30 mm
• Flute type: Straight
• Point angle: 118°
• Surface finish: Bright (uncoated)
• Cutting edge type: Single
• Maximum material thickness: 4 mm
• Direction of cut: Right-hand
• Standard: DIN 8037

Recommendations

Use with cutting oil or coolant for optimal performance and extended tool life.