Countersink with 3-flutes, 90° chamfering angle, maximum diameter 20.50mm with an overall length of 63mm and a head length of 17.1mm and 10mm straight shank, according to DIN 335 C standard to produce a conical seat for ISO Metric countersunk-head screws with a minium hole diameter of 3.50mm, cobalt based HSS-E with standard AlTiCN coating for machining alloy and tool steel, ferritic, martensitic and austenitic stainless steel and grey, malleable, ductile and compacted graphite cast-iron More information:  | | Coating name (Grade): | AlTiCN | Basic standard group (BSG): | DIN 335 C | Body material code (BMC): | HSS-E | Brand Name: | Dormer | Coating property (CTP): | Beschichtet | Connection diameter tolerance machine side (TCDCONMS): | h9 | Connection diameter - millimeter (DCON MS): | 10 mm | Hand (Cutting direction): | Right | Length chip flute - millimeter (LCF): | 17.1 mm | Flute count (NOF): | 3 | Overall length - millimeter (OAL): | 63 mm | Ordering code ISO: | G57020.5 |
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