Drill bit Irwin 10502410 HSS Pro 16.5 mm

Irwin 10502410 HSS Pro 16.5 mm is a high-speed steel twist drill bit engineered for metalworking and general-purpose drilling. With a 16.5 mm cutting diameter and HSS construction, the bit is intended to deliver accurate bores in steel, non-ferrous metals and selected plastics. The geometry and material of the drill provide resistance to heat buildup and maintain cutting performance during intermittent use in hand-held drills and drill presses.

Advantages

The HSS Pro material ensures elevated hardness and thermal resistance compared with standard carbon bits, reducing wear during cycles of drilling in metals. The 16.5 mm diameter is produced to tight tolerances to provide consistent hole size and improved fit for bolts and fittings. The twist-flute design evacuates chips effectively to help maintain cutting efficiency, while the shaft is compatible with standard drill chucks for quick installation and secure clamping.

Suitable for

• Drilling through mild and alloy steels
• Creating holes in non-ferrous metals such as aluminium and brass
• Drilling in rigid plastics and composite materials
• Workshop and on-site metal fabrication tasks

Key specifications

• Material: high-speed steel (HSS)
• Cutting diameter: 16.5 mm
• Type: twist drill bit with spiral flutes
• Intended use: metalworking and general-purpose drilling
• Compatibility: suitable for hand-held drills and drill presses with standard chucks

How to use

Select an appropriate drill speed and suitable cutting fluid when drilling metals to reduce heat and prolong tool life. Secure the workpiece firmly in a vice or with clamps, mark the drilling point, and start at a low speed to establish the center. Apply steady, moderate feed pressure and clear chips periodically to avoid clogging the flutes. Retract the bit occasionally in deep holes to remove swarf and maintain cutting performance.

Usage recommendations

For steel and harder alloys use a light-to-moderate cutting lubricant and moderate rpm; for non-ferrous metals and plastics, higher speeds without heavy lubrication are appropriate. Inspect the cutter for wear before use and replace the bit if chipping or excessive rounding of the cutting edge is observed.