Plugs
MS5015 MS3108A 28-21S MS3102A 28-21P 37 Core Pin 37Pin 37P U.S. Military Standard Aviation Plug Connector Socket 3106: Straight plug 3018: Angled plug 3102: Socket S means Hole P means Needle Pin. 3108 28-21S Plug Hole 3102 28-21P Socket Pin Full set = Plug S + Socket P 3108 28-21P Plug Pin 3102 28-21S Socket Hole Reverse installation complete set = Plug P + Socket S