Countersinks

Countersinks chamfer hole edges so fastener heads sit flush and sharp edges disappear. This parent category groups counterbores, deburring countersinks, single flute and three flute bits, cross-hole countersinks and boxed sets — with current stock strongest in three flute and deburring styles from Sutton Tools.

Single flute or three flute countersink — what's the difference?

Single flute countersinks cut freely and resist chatter in hand-held work; three flute versions leave a finer finish and run more smoothly under machine feed. For simply cleaning up drilled holes, a cross-hole deburring countersink is the quickest tool in the drawer.

WeldCo supplies countersinking tooling to fabricators across Melbourne and Adelaide through the Tradestore.