MIL-J-641E, MILITARY SPECIFICATION: JACKS, TELEPHONE, GENERAL SPECIFICATION FOR (26-FEB-1979) [S/S BY MIL-DTL-641F]

MIL-J-641E, MILITARY SPECIFICATION: JACKS, TELEPHONE, GENERAL SPECIFICATION FOR (26-FEB-1979) [S/S BY MIL-DTL-641F]., This specification covers jacks used in telephone (including switchboard consoles), telegraph, and teletype circuits, and for connecting headsets, handsets, and microphones into communications circuits.