MIL-DTL-38999 Series I

Coupling Mechanism: Bayonet-type, quick-disconnect.
Applications: blind-mating or hard-to-reach areas requiring rapid
connections, such as high-vibration and high-humidity environments. Features
a scoop-proof design to protect contacts from damage.
Materials: Offers finishes like electroless nickel, cadmium/olive drab, and anodized
coating, with both conductive and non-conductive options available.

MIL-DTL-38999 Series II
Coupling Mechanism: Low-profile bayonet coupling, quick-disconnect
with captive design.
Applications: Preferred for lightweight, compact designs (aviation, medical tech,
communications). Non-scoop-proof design.
Materials: Offers finishes: electroless nickel, cadmium/olive drab, anodized;
versatile for diverse environments.

MIL-DTL-38999 Series III
Coupling Mechanism: Threaded coupling, self-locking with rapid advance.
Applications: Widely applied in high-vibration, high-temperature environments
(military, aerospace). Scoop-proof design boosts contact durability.
Materials: Conductive/non-conductive finishes. Options include stainless steel and
composite shells for lightweight durability.