MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in installation. These connectors, operating between -65 °C and 200 °C, are environmentally sealed for reliable performance. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 8 (coax and twinax). Available in 9 shell sizes and 52 insert arrangements, they cater to various application needs. Constructed with high-strength aluminum shells and offering plating options like electroless nickel, they meet stringent durability requirements. Additionally, RoHS certified cadmium-free finishes are available, ensuring compliance with environmental standards. Suitable for military and industrial applications, these connectors provide a dependable solution for critical connectivity.