说明
DIN 2093.
Classification, groups in accordance with DIN 2093.
Group: 1: Material thickness t less than 1.25 mm.
CK 67, CK 75 and CK 85 in accordance with DIN 17222
Punched, cold-moulded with bevelled edges.
2. Material thickness t from 1.25 to 6.00 mm.
50 CRV 4 in accordance with DIN 17222 and DIN 17221
Punched, cold-moulded and turned diameters.
3: Material thickness t from 6.00 to 14.00 mm.
50 CRV 4 in acc