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DIN9861 DA Precision Punch with Countersunk blue head
Material HSS (High speed steel) Shaft: 64HRC+/-2, Head: 50HRC +/-5
Material WS (Tool steel) Shaft: 62HRC+/-2, Head: 45HRC +/-5 - available on request
Material HWS (High carbon high chrome steel) Shaft: 62HRC+/-2, Head: 50HRC +/-5 - Available whilst stocks last
DIN 9861 DA Precision Punch with countersunk (conical) head are hardened, tempered, ground, head hot tempered and annealed. DIN 9861 DA standard with permissible thickening under the head (d3 in diagram and table).