Centre Drill - 90°
Ordering number: 5969179

Centre drill (combined drill and countersink) with 90° straight conical form, double ended and cylindrical body, size 8 with 5/16" drill diameter, a body diameter of 3/4" and an overall length of 3.1/2", according to ANSI standard to produce form A centre holes or starting pilot and concial seat for ISO Metric countersunk-head screws, HSS and bright finish for machining free machining, plain carbon and alloy steel and grey cast-iron