M4x20 PLAIN 10.9 Hexagon socket button head screw ISO 7380-1
Firma Killich s.r.o. It offers hexagon socket head cap screws according to ISO 7380. The hexagon socket head cap screws according to ISO 7380 include A2, A4 stainless steel screws and galvanized steel with strength 10.9. Hexagon socket head screws with extremely small head (BN 1206) are hexagon socket head screws.
