MIL-R-3390E, MILITARY SPECIFICATION: RINGS, DEE (16 NOV 1971) [S/S BY MIL-DTL-3390G]

MIL-R-3390E, MILITARY SPECIFICATION: RINGS, DEE (16 NOV 1971) [S/S BY MIL-DTL-3390G]., This specification covers dee rings for use on various equipage items (see 6.1).