RUKO Step Drill Bit HSS 4.0-30.0 mm Size 2 Split Point

Step drill bit in high-speed steel for precise drilling in sheet metal, non-ferrous metals, plastics and wood. Drilling range 4.0–30.0 mm in 2.0 mm increments, 14 steps, split point for self-centering.

Overview

The RUKO STB-HSS-Ø4,0-30,0mm-Gr.2-S-SP is a step drill bit made of high-speed steel (HSS) with a bright uncoated finish. It features a straight shank with a diameter of 10 mm and a spiral flute for efficient chip removal. The split point design ensures accurate positioning without a centre punch, and the 118° point angle is suitable for a variety of materials.

What stands out

• Wide drilling range: 4.0 to 30.0 mm in 2.0 mm steps (14 steps)
• Split point for self-centering and reduced walking
• High-speed steel construction for durability
• Straight shank 10 mm for secure chucking
• Spiral flute for smooth cutting and chip evacuation

Technical details

• Material: High-Speed Steel (HSS)
• Drill Type: Step Drill Bit
• Drilling Diameter Range: 4.0 - 30.0 mm
• Number of Steps: 14
• Step Increments: 2.0 mm
• Shank Type: Straight Shank
• Shank Diameter: 10 mm
• Point Type: Split Point (Self-Centering)
• Point Angle: 118°
• Surface Finish: Bright (Uncoated)
• Overall Length: 75 mm
• Working Length: 50 mm
• Application: Sheet metal, non-ferrous metals, plastics, wood
• Max Material Thickness: 4 mm
• Size Designation: Size 2
• Standard: DIN 1412 C
• Cutting Direction: Right-hand cut
• Flute Type: Spiral Flute

Our verdict

A versatile step drill bit for clean, accurate holes in thin materials. The split point and HSS construction make it a reliable choice for professionals.