Insert 17-99 · Shell 17 (E) · Breach-Lok ¼-Turn · Olive Drab Cadmium · IP67
MIL-DTL-38999 Series IV
Breach-Lok Receptacle (49)
Milnec / Glenair
17 (E)
17-99
Pin (Male)
Olive Drab Cadmium (W)
Aluminum Alloy
Breach-Lok ¼-Turn Quick Connect
Visual + Tactile + Audible
-65°C to +175°C
Metal clip, rear release
500 hours (Cadmium)
500 mating cycles
Contact for quote (Milnec)
DigiKey, Milnec Special Order
MIL-DTL-38999 Series IV is the newest addition to the 38999 family, featuring a 90° quarter-turn breech-lock coupling mechanism with three-mode engagement confirmation: visual (alignment marks), tactile (detent feel), and audible (click sound). This makes Series IV the most robust and foolproof mating system in the 38999 family — ideal for blind-mate and high-vibration applications.
| Airoadcon | Milnec | Glenair |
|---|---|---|
| D38999/49WE99PC-EQ | D38999/49WE99PC | D38999/49WE99PC |
| Segment | Value | Meaning |
|---|---|---|
| D38999/ | Mil-Spec | MIL-DTL-38999 family |
| 49 | Style | Breach-Lok receptacle (jam nut / flange mount) |
| W | Class / Plating | Cadmium Olive Drab over Nickel (500h salt spray) |
| E | Shell Size | 17 — medium shell |
| 99 | Insert Arrangement | Custom / high-density (consult insert chart) |
| P | Contact Type | Pin (Male) |
| C | Polarization | Alternate C keying |
Series IV Breach-Lok connectors excel in blind-mate scenarios where visual confirmation of proper coupling is limited — engine compartments, wing-mounted pods, interior avionics racks, and armored vehicle power distribution. The ¼-turn mechanism is faster than Series III threading while more secure than Series II bayonet. QPL qualified per DLA standards.
Need D38999/49WE99PC?
Airoadcon cross-brand Series IV equivalent — free samples, 4-week lead time. Breach-Lok and traditional coupling options available.
Request Quote / Sample