Series IV · Breech (quarter-turn) coupling · Box mount · Rear-release crimp contacts
D38999/42
MIL-DTL-38999 Series IV
Receptacle, box mount
Breech, 90° quarter-turn
Direct to equipment housing / box, no separate wall flange
D38999/41 box mount, hermetic
/40 wall mount · /44 jam nut · /46 plug EMI · /47 plug
M39029 rear-release crimp, size 22D through size 8
Pin or socket insert
P = pin, S = socket; A/H = pin less contacts / 1500 cycles; B/J = socket equivalents
F · W · G · Y (CRES passivated) · N (CRES nickel)
N plus A, B, C, D, K, L, M, R, U
-65 °C to +200 °C
500 mating cycles
1000 lb-in
Audible, tactile and visual
Spread across the channelled mounting flange
Intermates with Series III of the same shell size and arrangement
Glenair 234-105-42 COTS family
MIL-DTL-38999 / AS38999
| Brand | Equivalent Part Number |
|---|---|
| Airoadcon | D38999/42 |
| Glenair | 234-105-42 |
| Amphenol Aerospace | D38999/42 |
| TE Connectivity / Deutsch | D38999/42 |
| Souriau / Eaton | D38999/42 |
D38999/42 is the box-mount receptacle of MIL-DTL-38999 Series IV: the same breech-coupling interface as the /40 wall mount, but with the shell designed to bolt straight onto an equipment housing rather than to a separate wall flange. That makes it the choice for avionics line-replaceable units, missile and store electronics, and any enclosure where the connector body is mounted directly into the box wall and the mating cable plug approaches from outside. The 90-degree quarter-turn breech-lok coupling keeps the mating action short where there is no room to rotate a threaded coupling by hand, and the audible/tactile/visual confirmation matters in blind-mate and glove-limited maintenance environments. Shell sizes, insert arrangements and M39029 crimp contacts are common with the rest of the 38999 system, so a box-mount Series IV receptacle can be designed into a new LRU without changing the harness contact tooling.
Need D38999/42?
Cross-brand compatible. Free samples available. 4-week lead time on standard configurations.
Email: info@airoadcon.com | Phone: +86-189-9192-7716