2014GOST IEC 60061-1-2014 Lamp caps and holders for light sources together with gauges for the control of interchangeability and safety. Part 1. Lamp cap
1989GOST 28108-1989 Caps for light sources. Types, main and coupling dimensions, gauges
GOST 28108-1989 Caps for light sources. Types, main and coupling dimensions, gauges was changed to GOST IEC 60061-1-2014 Lamp caps and holders for light sources together with gauges for the control of interchangeability and safety. Part 1. Lamp cap.