Diager 502B HSS TiAlN-Coated 5% Cobalt Step Drill Bit (4–30mm x 100mm)

HIGHLIGHTS:

The Diager 502B HSS TiAlN-Coated 5% Cobalt Step Drill Bit (4–30 mm × 100 mm) is a premium step drill engineered for fast, accurate drilling and hole enlargement in metal, plastic, and composite materials. Manufactured from fully ground HSS with 5% cobalt and protected by a TiAlN (Titanium Aluminium Nitride) coating, it delivers exceptional wear resistance, reduced friction, and superior heat resistance for extended tool life.

The drill bit features a helical flute for improved chip evacuation and smoother penetration, while the integrated deburring tool produces clean, burr-free holes in a single operation. Its three-flat shank provides maximum grip inside the drill chuck, preventing slippage during demanding applications.

Designed for professional fabricators, electricians, installers, and maintenance technicians, the Diager 502B Step Drill Bit is ideal for enlarging existing holes or drilling multiple diameters using a single tool.

FEATURES:

• Fully Ground HSS with 5% Cobalt for excellent strength and durability.
• TiAlN (Titanium Aluminium Nitride) Coating improves wear resistance and heat protection.
• Helical Flute Design provides smooth penetration and efficient chip evacuation.
• Integrated Deburring Tool creates clean, burr-free holes.
• Three-Flat Shank ensures secure chuck grip and minimizes slippage.
• Multiple drilling diameters with a single step drill bit.

BENEFITS:

• Extended Tool Life through advanced TiAlN coating.
• High Temperature Resistance for continuous heavy-duty drilling.
• Fast Penetration with improved chip removal.
• Clean Hole Finishing thanks to the integrated deburring feature.
• Maximum Chuck Holding Power with the three-flat shank design.

Suitable Materials:

• Stainless Steel
• Alloy Steel
• Non-alloy Steel
• Cast Iron (Spheroidal)
• Cast Iron
• Aluminium
• Composite Materials
• Copper
• Brass
• Plastic