G570 - 20.5mm Dormer HSS-E Straight Shank 3 Flute 90° Countersink - AlTiCN Coated
G57020.5
G570
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 minimum 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.
| Cutting Diameter Second Step (DC 2) | 20.50mm |
| Cutting Diameter Step (DC 1) | 3.50mm |
| Length Chip Flute (LCF) | 17.1mm |
| Overall Length (OAL) | 63.0mm |
| Shank Diameter (DCON MS) | 10.00mm |
| Shank Tolerance | h9 |
| Number of Flutes | 3 |
G57020.5 G570 - 20.5MM DORMER HSS-E STRAIGHT SHANK 3 FLUTE 90° COUNTERSINK - ALTICN COATED