Description
Step drill with 90 Degree included step angle, DIN 6535HA parallel shank and a drilling-pilot diameter of 6.80mm with a length of 21.00mm, a countersink diameter of maximum 10.00mm and an overall length of 89mm, according to Dormer standard to produce a thread tapping drill hole with chamfer for M8 thread, solid carbide and bright finish for machining free machining, plain carbon, alloy and tool steel, ferritic, martensitic, austenitic and super-austenitic, Duplex or precipitation hardening stainless steel, grey, malleable, ductile, austenitic or austempered ductile and compacted graphite cast-iron, wrought and cast aluminium and copper or copper alloys.
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