MIL-DTL-38999 Series II connectors offer robust connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors operate flawlessly in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options such as front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles, they cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts, ensuring secure and reliable connections. Crafted from durable aluminum, they boast a range of plating options, including cadmium-free finishes for RoHS compliance. With a straight plug design, EMI shielding, and bayonet coupling, these connectors are ideal for military and industrial applications requiring high-performance electrical connectivity in demanding environments.