Applies to string insulator units of the cap and pin and long rod types and their associated metal fittings for overhead lines. Includes six standard sizes designated by the nominal pin diameters which form the basis of the standard. Defines each standard size by the dimensions of the pin ball, of the socket and the hook-on 'Go' gauge. States dimensions of twin-balled pins for coupling of two sockets. Tabulates clearance and locking conditions. Appendices give information on extreme positions of the pin ball in the socket as well as on gauges for checking dimensions.

DIN 48065-2 (1980-10) - Identical

DIN 48065-3 (1980-10) - Identical

DIN 48063-1 (1978-02) - Identical

HD 474:1986 - Identical

DIN IEC 60120 (1987-11) - Identical

SS IEC 120 Ed. 2 (1986) - Identical

UNE 21009:1989 - Identical

AS 2947.3-1995 - Equivalent

PN IEC 120:1997 - Identical

BS 3288-2:1977 - Similar

NFC 66 495:1988 - Identical

BS 302-7:1989 - Equivalent

BS 3288-3:1989 - Equivalent

DIN 48065-1 (1980-10) - Identical

JIS C 3816:1999 - Equivalent

NEN 10120:1985 - Identical

CEI 36-10 Ed. 1 (1997) - Identical

JIS C 3810:1999 - Identical

AS 2947.3-1989 - Equivalent