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. Available in various configurations including front and rear wall mount, as well as jam nut receptacles, these connectors offer reliable performance in demanding conditions. Utilizing M39029 rear release crimp contacts, they ensure secure connectivity in sizes 22D, 22M, 22, 20, 16, and 8 (coax and twinax). Constructed with high-strength aluminum shells and offered in different plating options such as cadmium and nickel, these connectors meet stringent military specifications for durability. With RoHS compliant finishes available, they provide a versatile solution for critical applications in aerospace, defense, and industrial sectors.