MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. This connector family includes front and rear wall mount, jam nut receptacles, and RFI grounding plugs, available in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts in various sizes, they offer exceptional durability with high strength aluminum shells. Plating options include cadmium-free finishes like electroless nickel and anodized aluminum, meeting RoHS compliance. Ideal for military and industrial applications, these connectors ensure reliable performance with their gold-plated removable crimp contacts and bayonet coupling design.