Used on cass consolidated automated support system. item consists of 1 shell plug DPX4-33-000, 3ea insulaor assy skt dpx 26, 1 ea dpx-677 insulator assy, 3 ea post pol, 3 ea nut pol post, 3 ea number 4 lockwashers, 16 SCREWSNUMBER2-56X7/32 sems filh ms, 4 ea plate insert retaining, 83 contact assy skt 1616 lif, 66 ea contact assy skt, number 2020 hd lif, polarizing hardware supplied loose with connectors