RUKO STB-HSS-TiN-Ø1/8-1/2-Zoll Step Drill Bit, HSS, TiN Coated, 13 Steps, 1/8 inch to 1/2 inch

This RUKO step drill bit is crafted from high-speed steel with a titanium nitride coating, offering a 13-step diameter range from 1/8 inch to 1/2 inch. The TiN coating reduces friction and heat, extending tool life when drilling sheet metal, non-ferrous metals, plastics, and wood. A self-centering tip and straight flute design ensure clean, accurate holes without a pilot drill, while the step geometry also deburrs the hole edge in one pass.

Highlights

• 13 steps: 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2"
• TiN coating for reduced friction and longer life
• Self-centering tip eliminates the need for a pilot drill
• Straight flute for efficient chip removal
• Deburrs the hole edge while drilling

In daily use

For electricians, plumbers, and metalworkers, this step drill handles thin materials up to 4 mm thickness in steel and stainless steel. The cylindrical shank fits standard 1/4" drill chucks, and the 130° point angle provides a stable start. Total length is 75 mm with a working length of 50 mm.

Full specifications

• Drill bit type: Step drill bit
• Material: High-speed steel (HSS)
• Coating: Titanium nitride (TiN)
• Diameter range: 1/8" to 1/2"
• Number of steps: 13
• Shank type: Cylindrical
• Shank diameter: 1/4" (6.35 mm)
• Total length: 75 mm
• Working length: 50 mm
• Point angle: 130°
• Flute type: Straight flute
• Measurement system: Imperial (inch)
• Self-centering tip: Yes
• Deburring capability: Yes
• Recommended materials: Sheet metal (steel, stainless steel up to 2mm), non-ferrous metals, plastics, wood
• Max material thickness: 4 mm (for optimal performance)

Final note

A versatile step drill for precise, burr-free holes in thin materials, backed by RUKO's precision manufacturing.