Drill bit Irwin 10503856 — HSS twist drill for metal and wood, compatible with standard chucks

Irwin 10503856 is a high-speed steel (HSS) twist drill for metal and wood designed for general-purpose drilling with hand drills and drill presses. The straight-shank geometry fits standard chucks, allowing quick tool changes and stable clamping. The HSS material provides wear resistance and reliable cutting performance for through-holes, pilot holes and everyday workshop or construction tasks.

Advantages

The HSS construction provides a balance of hardness and toughness suitable for machining soft to medium-hard metals and wood. The straight shank ensures compatibility with most standard chucks and straightforward insertion into handheld or bench-mounted drills. Ground flutes and a conventional point angle deliver predictable chip evacuation and steady drilling performance in a variety of materials. Overall, the design supports repeated use in general workshop and on-site conditions without the need for specialized holders.

Suitable for

• Drilling through-holes in mild steel, aluminium and non-ferrous metals
• Pilot holes for screws and fasteners in wood and composite materials
• General maintenance and repair tasks with hand drills or drill presses
• Workshop fabrication and construction site drilling where standard chucks are used

Key specifications

• Material: high-speed steel (HSS)
• Type: twist drill (spiral flute)
• Shank: straight shank compatible with standard chucks
• Suitable materials: carbon and alloy steels, aluminium, non-ferrous metals, wood
• Applications: through-holes, pilot holes, general-purpose drilling

How to use

Select a drill size appropriate for the hole and material, clamp the workpiece securely, and fit the twist drill into a standard chuck ensuring proper alignment. Use moderate feed pressure and appropriate spindle speed for the material—lower speeds for harder metals and higher speeds for wood and aluminium. Apply cutting lubricant when drilling steel to reduce heat and prolong tool life. Retract the drill periodically to clear chips when drilling deep holes.

Usage recommendations

For best results, match drill speed and feed to the material: slower speeds and cutting oil for steel, faster speeds for aluminium and wood. Inspect the drill for wear or blunting before use and replace when cutting performance declines to avoid poor hole quality and excessive heat build-up.