UNI 5733-1965 There are hexagonal nut door catches and narrow flat bell-shaped head screws and bolts. ISO coarse pitch metric thread, replacing UNI 885, UNI 886 and UNI 907 1). Class C
1965UNI 5733-1965 There are hexagonal nut door catches and narrow flat bell-shaped head screws and bolts. ISO coarse pitch metric thread, replacing UNI 885, UNI 886 and UNI 907 1). Class C