Spiral cutting drill bit KWB 512604 4.5 mm

Spiral cutting drill bit KWB 512604 4.5 mm is a HSS-M2 wood drill with a carbon steel counterbore and integrated countersink. Designed for drilling and preparing holes for structural countersunk woodscrews, this 4.5 mm diameter bit works with both softwoods and hardwoods as well as coated or uncoated boards and some plastics. The bit is housed in a blister pack for convenient storage and handling.

Advantages

The HSS-M2 spiral design provides precise, clean drilling with good edge retention. The carbon steel counterbore and separate 7 mm counterbore option ensure correct seat depth for screw heads, while the built-in 11 mm countersink produces a neat recess for countersunk screws. Compatibility with common IKEA screw dimensions makes this drill suitable for furniture assembly and repair.

Suitable for

• Drilling pilot holes for structural countersunk wood screws
• Preparing holes in softwood and hardwood
• Working with coated or uncoated wooden boards
• Drilling in certain plastics

Key specifications

• Brand: KWB
• MPN: 512604
• EAN: 4009315126043
• Diameter: 4.5 mm
• Material: HSS-M2 (drill), carbon steel (counterbore)
• Counterbores: 4.5 mm and 7 mm
• Countersink diameter: 11 mm
• Packaging: blister

How to use

Mark the screw position and clamp the workpiece. Use the 4.5 mm spiral drill to create the pilot hole at the required depth, then apply the 7 mm counterbore where a deeper seat is needed. Finish with the integrated 11 mm countersink to form a flush recess for the screw head. Operate at appropriate drill speeds for the material and use steady pressure to avoid splintering.

Usage recommendations

For best results, use sharp, undamaged drill bits and appropriate drill speeds: slower speeds for hardwoods and plastics, higher speeds for softwoods. Test on a scrap piece to confirm depth and fit before working on visible surfaces. Replace the bit when wear affects hole quality.