MIL-U-20625, MILITARY SPECIFICATION: UNIVERSAL JOINT, BLOCK TYPE, MECHANICAL REMOTE CONTROL SYSTEM (28 MAR 1957)

MIL-U-20625, MILITARY SPECIFICATION: UNIVERSAL JOINT, BLOCK TYPE, MECHANICAL REMOTE CONTROL SYSTEM (28 MAR 1957)., This specification covers universal joints of the block type for use in rotary type hand-operated or intermittent power operated valve remote control systems of the mechanical type.