DIN 8912 1990 Coupling Nuts and screwed plugs for use with PN 40 flared flange s.pdf
DIN 2082-1 1979 Nuts for Milling Machine Arbors.pdf
A N A M E R I C A N N A T I O N A L S TA N D A R DASME B18.2.2-2010[Revision of ASME/ANSI B18.2.2-1987...