Electroplated diamond countersinks and drill countersinks are manufactured to customer’s specifications and are very good for countersinking GRP, carbon fibre and plastic composites.
Type “A” both drill and countersink are diamond electroplated and can be supplied between 4 - 12mm diameters.
Type “B” only the countersink is diamond electroplated, a standard masonry bit is used as the drill. Can be supplied between 5.5 - 9mm
Type “C” electroplated diamond countersink is complemented by a plain pilot to centralise countersinking with the original hole.
Type “D” electroplated diamond plain countersink is manufactured to a point.
Grades - 36/44, 44/60
Other sizes and grades are available on request.