The MIL-DTL-38999 Series I connectors feature up to 128 contacts enclosed in a sealed insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. Available in various mounting styles like front and rear wall mounts, as well as jam nut receptacles, they offer versatility in installation. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, including 22D, 22M, 22, 20, 16, and 8, these connectors ensure secure and reliable connections. Crafted from high-strength aluminum, they come in different plating options like cadmium and nickel for enhanced durability. RoHS certified finishes are also available. Perfect for military and industrial applications, these connectors guarantee a service life of 500 cycles, meeting stringent environmental and performance standards.