Countersink set in DIAL-A-TOOl container consisting out of 4 G136 countersinks with a 90° chamfering angle, diameters 6.30, 10.40, 16.50, and 20.50mm, according to DIN 335 C standard to produce a conical seat for ISO Metric countersunk-head screws, HSS with standard bright finish for machining general purpose applications
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