MIL-DTL-38999 Series II connectors offer robust connectivity with up to 128 contacts in a sealed insert, designed for harsh environments. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they ensure versatile installation. With a wide operating temperature range of -65 °C to 200 °C, these connectors guarantee reliability in extreme conditions. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Crafted from durable aluminum, they come in plating options including cadmium-free finishes for RoHS compliance. With gold contact plating and a mating type of bayonet, they offer efficient signal transmission with a service life of 500 cycles. Suitable for demanding applications requiring environmental resistance, these connectors are ideal for military and industrial use.