MIL-DTL-38999 Series II connectors offer robust connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they operate flawlessly in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for secure connections. Crafted from aluminum, they come with a choice of plating options such as electroless nickel and cadmium finishes. With a straight plug design and bayonet coupling, they ensure efficient mating in military and industrial applications. Compliance with RoHS standards underscores their commitment to environmental responsibility.