The Snappy Tools 43540 is a two-step drill-and-countersink bit sized for 5mm x 40mm confirmat screws, the fasteners used in knock-down and ready-to-assemble cabinet and furniture joints. One pass drills the pilot hole and cuts the stepped counterbore, so the confirmat screw seats flush and pulls the joint tight.
- Sized for 5mm x 40mm confirmat screws
- 3.5mm HSS brad-point twist drill for the pilot hole
- Stepped counterbore, 0.197"/0.299" at 82 degrees, for the screw head and shoulder
- 1/4" hex power bit shank — fits standard drill chucks and quick-change drivers
- Replacement drill bit (#49540) sold separately
Chuck it into a drill or driver, drill straight through the panel face at the confirmat screw location, and drive the screw home in the same hole.