Drill bit DeWalt DT5557 HSS 10.0 mm for metal drilling

DeWalt DT5557 HSS 10.0 mm drill bit is a high-speed steel cutting tool designed for drilling clean, accurate holes in metal. Engineered for work in steel and other ferrous materials, this 10.0 mm bit is compatible with standard chucks on handheld drills and drill presses. The geometry and material selection focus on chip evacuation, cutting edge retention and consistent hole quality for workshop and professional applications.

Advantages

The HSS construction provides good heat resistance and wear performance during continuous metal cutting. The 10.0 mm diameter ensures compatibility with common fastening and assembly sizes while delivering stable drilling with minimal wandering. Precision ground flutes and a sharp point reduce burr formation and improve surface finish, and the bit is suited to both portable and stationary drilling setups.

Suitable for

• Drilling holes in mild and alloy steels
• Workshop and maintenance tasks requiring 10.0 mm holes
• Use with handheld electric drills and drill presses
• Preparing holes for bolts, rivets and threaded inserts

Key specifications

• Material: High-speed steel (HSS)
• Diameter: 10.0 mm
• Intended material: Steel and other ferrous metals
• Shank type: Round shank compatible with standard chucks
• Application: Metal drilling for workshop and professional use

How to use

Secure the drill bit firmly in the chuck, ensuring proper alignment and minimal runout. Mark the drilling point and, if required, use a center punch to prevent walking. Select appropriate drill speed for HSS and the thickness of the metal; generally use moderate to high RPM for smaller diameters but reduce speed for thicker or harder steels. Apply steady pressure and allow the bit to cut without excessive force. Use cutting fluid or lubricant to reduce heat buildup and improve chip evacuation when drilling tougher metals. Clear chips periodically to maintain cutting efficiency.

Usage recommendations

For optimal life and hole quality, use cutting lubricant when drilling ferrous metals, clamp workpieces securely, and avoid excessive side pressure. Replace the bit when wear or dulling causes reduced accuracy or increased thrust force.