EMI Grounding Plug, 128 × #22D Pin, Shell 25 (J), Key B, Olive Drab — MIL-DTL-38999 III

Specifications

Cross-Brand Compatibility

Application

D38999/46WJ35PB is the /46 EMI grounding plug at shell size 25 (letter J) on the 25-35 insert — 128 size-22D contacts, the highest-density arrangement in that shell. The /46 style carries spring grounding fingers on the coupling ring: the shell-to-shell bond is made before the contacts touch, which is what protects a high-pin-count signal harness from a discharge through the contact field. Key B rotates the insert clocking one position from normal, so this plug only mates with a key-B receptacle of the same shell and insert — a key-N receptacle will not seat. The 128-contact build is normally used for avionics rack and equipment-bay harnesses where a single shell must carry a full signal bundle.