Drill bit HSS long series 3.5 mm Irwin 10502485

Irwin 10502485 is a 3.5 mm HSS long-series drill bit engineered for drilling metal and other common materials. Manufactured from high-speed steel (HSS), the long-length design delivers increased reach for through-holes, recessed drilling and applications where a standard-length bit is too short. The 3.5 mm diameter is intended for precise small-diameter holes in maintenance, workshop and construction environments and is compatible with standard chucks supporting straight-shank bits.

Advantages

The HSS material offers good wear resistance and heat tolerance during continuous drilling, while the long-series geometry allows access to deeper workpieces without sacrificing concentricity. The 3.5 mm diameter provides consistent hole size for fastening and assembly tasks. The straight shank and standard flute design facilitate chip evacuation and stable drilling performance in a range of common metals and other machinable materials.

Suitable for

• Drilling through steel, iron and non-ferrous metals
• Creating recessed or deep holes in maintenance and repair work
• Workshop and construction fastening and assembly tasks
• Precision small-diameter holes for brackets, fittings and electrical components

Key specifications

• Diameter: 3.5 mm
• Material: High-speed steel (HSS)
• Style: Long-series (extended length) drill bit
• Shank type: Straight shank for standard chucks
• Intended materials: Metals and common machinable materials

How to use

Select an appropriate drilling speed and apply steady, moderate feed pressure suitable for 3.5 mm HSS drilling in metal. Secure the workpiece and ensure the drill is held perpendicular to the surface for accurate holes. Use cutting fluid or coolant when drilling harder metals to reduce heat and extend tool life. Withdraw the bit occasionally to clear chips when drilling deep holes to prevent clogging and overheating.

Usage recommendations

For best results, match drill speed to the material being drilled, use appropriate coolant for steel, and inspect the bit for wear before precision tasks; replace if edges become rounded or chipping occurs.