Countersink with 3-flutes, 90° chamfering angle, maximum diameter 31.00mm with an overall length of 71mm and a head length of 18.5mm and 12mm tri-flat shank, according to DIN 335 C standard to produce a conical seat for ISO Metric countersunk-head screws with a minium hole diameter of 4.20mm, HSS with standard bright finish for machining free machining, plain carbon and alloy steel, grey cast-iron, copper or copper alloys More information:  | | Coating name (Grade): | Bright | Surface treatement: | Original surface | Basic standard group (BSG): | DIN 335 C | Body material code (BMC): | HSS | Brand Name: | Dormer | Connection diameter tolerance machine side (TCDCONMS): | h9 | Connection diameter - millimeter (DCON MS): | 12 mm | Hand (Cutting direction): | Right | Length chip flute - millimeter (LCF): | 18.5 mm | Flute count (NOF): | 3 | Overall length - millimeter (OAL): | 71 mm | Point Angle (SIG): | 90 ° | Ordering code ISO: | G10631.0 |
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