Countersink for Screws GEKO G64986 — 4/10 mm (model 400)

Countersink for Screws GEKO G64986 — 4/10 mm (model 400) is a compact cutting tool designed to produce conical recesses for flat-head and countersunk screws. The tool delivers a precise seat for screw heads in wood and thin metal sheets and is suitable for hand-held and drill-mounted use. Its small size and simple geometry make it practical for assembly, carpentry, repair work, and other tasks that require accurate screw positioning and a flush finish.

Advantages

The countersink provides a clean, consistent cone profile that helps prevent screw head deformation and ensures flush mounting. Its dimensions are optimized for small-to-medium screw sizes and thin materials, enabling controlled material removal with minimal tear-out on wood and reduced burr formation on metal. The tool's compact design allows easy handling in tight spaces and straightforward attachment to standard drills for quick on-site use.

Suitable for

• Creating countersunk holes in soft and hardwoods for flush screw heads
• Deburring and making seating recesses in thin sheet metal
• Assembly and carpentry tasks where precise screw seating is required
• Repair and retrofit jobs in furniture and fixtures

Key specifications

• Cone diameter: 4/10 mm suitable for small countersunk screws
• Intended materials: wood and light metals (thin sheets)
• Mounting: drill-mounted or handheld operation
• Profile: single conical cutting geometry for clean seating
• Size class: compact, suitable for confined work areas

How to use

Secure the countersink in the drill chuck or use it by hand where appropriate. Mark the screw position and pilot-drill a hole if required by the screw manufacturer or material type. Apply steady, moderate speed and light downward pressure to create the conical recess; avoid excessive force or high RPM to reduce burning or tear-out. Test on a scrap piece when working with a new material to confirm depth and fit for the chosen screw head.

Usage recommendations

For best results, pilot-drill holes in hardwoods prior to countersinking and use a lubricant or cutting paste when working with metal to reduce heat and burrs. Inspect the countersink edge periodically and replace the tool if wear leads to diminished cutting quality or increased splintering.