MIL-STD-1651, MILITARY STANDARD: INSERT ARRANGEMENTS FOR MIL-C-5015, MIL-C-22992 (CLASSES C, J, AND R), AND MIL-C-83723 (SERIES II) ELECTRICAL CONNECTORS (27 JUN 1975)., This standard covers insert arrangements for use with MIL-C-5015, MIL-C-22992 (classes C, J, and R)), and MIL-C-35723 (series II) electrical connectors.