Slotted pan head screws -- Product grade A
Это стандарт пересмотрен ISO 1580:2011
Specifies the characteristics of slotted pan head screws of product grade A and with threads from M1,6 to M10 inclusive. If, in special cases, specifications other than those listed here are required, they should be selected from existing International Standards, e.g. ISO 261, ISO 888, ISO 898-1, ISO 965-2 and ISO 3506.