Series IV · Breech coupling · Plug with EMI ground spring · e.g. D38999/46WJ30PN
D38999/46
MIL-DTL-38999 Series IV
Plug with EMI ground spring
D38999/47 (plug without EMI ground spring)
Breech, 90° quarter-turn self-locking
D38999/46WJ30PN
38999/46 plug with EMI ground spring · W class · J shell · 30 arrangement · P pin · N polarization
Environmental, aluminium, cadmium olive drab, conductive, -65 °C to +175 °C
Environmental, aluminium, electroless nickel, conductive, -65 °C to +200 °C
Environmental aluminium · CRES passivated · CRES electrodeposited nickel
P pin · S socket · A pin less contacts · B socket less contacts · H pin 1500 cycles · J socket 1500 cycles
N (Normal), A, B, C, D, K, L, M, R, U
360° spring finger contact between plug shell and mating receptacle
M39029 rear-release crimp, size 22D through size 8
500 mating cycles (A/B inserts), 1500 cycles with H/J inserts
1000 lb-in
-65 °C to +200 °C (per class)
Glenair 234-105-46
MIL-DTL-38999 / AS38999
| Brand | Equivalent Part Number |
|---|---|
| Airoadcon | D38999/46 / D38999/47 |
| Glenair | 234-105-46 / 234-105-47 |
| Amphenol Aerospace | D38999/46 |
| TE Connectivity / Deutsch | D38999/46 |
| Souriau / Eaton | D38999/46 |
D38999/46 is the MIL-DTL-38999 Series IV plug that carries an EMI grounding spring — a ring of spring fingers that bears against the mating receptacle shell to give a continuous low-impedance path from plug shell to receptacle shell all the way round, rather than relying on the coupling threads and a single shell-to-shell touching point. That matters on harnesses routed inside equipment bays next to switching power supplies, radios and digital buses, where an intermittent shell bond turns a shielded cable into an antenna. The /47 is the same plug without the EMI ground spring for applications where EMC is handled elsewhere; the two are otherwise identical and both use the Series IV 90-degree breech-lok coupling with audible, tactile and visual engagement confirmation. The example designation D38999/46WJ30PN decodes as plug with EMI ground spring, class W cadmium olive drab, shell size J (25), insert arrangement 30, pin contacts, normal polarization — the format carries a full configuration in a single part number.
Need D38999/46?
Cross-brand compatible. Free samples available. 4-week lead time on standard configurations.
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