Drill Bit STANLEY STA51038 universal cylindrical 4 mm for metal and wood

STANLEY universal cylindrical drill bit STA51038 with a 4 mm cutting diameter is designed for straightforward drilling in wood and metal. The twist-drill geometry and cylindrical shank make it compatible with standard drill chucks and suitable for handheld drills and drill presses. Its general-purpose design targets common DIY, repair and light professional tasks where a reliable, small-diameter hole is required.

Advantages

The 4 mm STANLEY drill bit combines a balanced cutting geometry and a cylindrical shank for secure seating in most chucks and repeatable hole positioning. Its construction provides wear resistance appropriate for occasional and frequent use on softer metals and a variety of wood types. The universal design reduces the need to change bits when switching between wood and metal, simplifying tool selection for general tasks.

Suitable for

• Drilling pilot and through holes in soft and mild steels
• Creating holes in plywood, pine, MDF and common hardwoods
• Home improvement and furniture assembly
• Repair work on metal brackets, panels and fixtures
• Use with handheld drills and drill presses for light-duty tasks

Key specifications

• Diameter: 4 mm
• Shank type: cylindrical (straight) shank for standard chucks
• Material compatibility: wood and metal (general-purpose use)
• Drill style: twist drill
• Typical applications: pilot holes, through-holes, light repair and assembly

How to use

Secure the drill bit in the chuck and tighten firmly to prevent slipping. Select a drilling speed appropriate to the material: medium to high speeds for wood, lower speeds for metal to reduce heat. Apply steady, moderate pressure and clear chips periodically to maintain cutting efficiency. When drilling metal, use cutting lubricant if necessary to prolong tool life and improve hole quality. After use, clean debris from the flutes and store the bit in a protective holder to avoid damage.

Usage recommendations

For best results, start with a pilot or center punch for precise hole placement in metal, and choose an appropriate feed rate to avoid bit breakage. Use a clamp or vice to secure small or thin workpieces when drilling. Replace the bit when wear or chipping degrades hole accuracy.