MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts, featuring durable inserts for environmental sealing. Designed for harsh environments, these connectors operate reliably in temperatures ranging from -65 °C to 200 °C. Available in various configurations including front and rear wall mount, as well as jam nut receptacles, they ensure secure connections in demanding applications. The connector family boasts 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts in different sizes. Constructed with high-strength aluminum shells and offering multiple plating options such as cadmium and nickel, these connectors guarantee long-lasting performance. Their RoHS certified finishes further enhance their environmental compliance, making them ideal for a wide range of military and industrial uses.