Drill bit KREATOR KRT010107 HSS 3.5×70 mm for metal

KREATOR KRT010107 HSS 3.5×70 mm drill bit is engineered for drilling precise holes in metal. Manufactured from high-speed steel (HSS), this straight-shank twist drill offers resistance to wear and sustained cutting performance during repeated use. With a 3.5 mm cutting diameter and 70 mm overall length, it is suitable for general metalworking tasks that require accurate, clean holes in mild steel and similar ferrous materials. The drill bit fits standard three-jaw chucks and smaller keyed or keyless chucks used on handheld drills and drill presses.

Advantages

The HSS material provides good hardness and temperature resistance compared with standard carbon steel, helping the tip retain its sharpness under typical drilling speeds. The 3.5 mm diameter delivers fine, accurate holes for fastening, alignment, and pilot-drilling operations. The straight shank and common geometry ensure compatibility with a wide range of drills, while the 70 mm length gives sufficient reach for through-holes and moderately deep blind holes without compromising rigidity.

Suitable for

• Drilling holes in mild steel and other ferrous metals
• Creating pilot holes for screws, bolts and rivets
• Fabrication, maintenance and repair work
• Use with handheld drills and drill presses

Key specifications

• Material: High-speed steel (HSS)
• Cutting diameter: 3.5 mm
• Overall length: 70 mm
• Shank type: Straight round shank
• Tip/point style: Twist drill geometry suitable for metal

How to use

Secure the drill bit in the chuck, ensuring it is concentric and tightened. Mark the drilling position on the workpiece and, for increased accuracy on smooth or painted surfaces, use a center punch to create a small indent. Select a moderate spindle speed appropriate for HSS drills in metal (lower speeds for larger diameters and harder materials), and apply steady feed pressure. Use cutting fluid or lubricant to reduce heat and prolong tool life when drilling ferrous metals. Withdraw the bit periodically to clear chips when drilling deeper holes.

Usage recommendations

For best results, match drilling speed to material hardness and maintain consistent lubrication. Replace the bit if the cutting edge becomes visibly worn or produces excessive burring; resharpening is possible if appropriate tools and skills are available.