MIL-DTL-38999 Series I connectors offer durable and reliable connectivity with up to 128 contacts housed in an insert. Designed for harsh environments, these circular receptacles feature front wall mount, rear wall mount, and jam nut options, ensuring versatile installation. With a wide operating temperature range of -65 °C to 200 °C, they are suitable for demanding applications. Compliant with military specification MIL-DTL-38999 I, these connectors are constructed with high-strength aluminum shells and come in various plating options, including gold for optimal conductivity. Utilizing M39029 rear release crimp contacts, they provide secure connections in sizes 22D, 22M, 22, 20, 16, and 8. Available in 9 shell sizes and 52 insert arrangements, with RoHS-certified cadmium-free finishes, these connectors are ideal for critical military and industrial systems requiring rugged, environmentally sealed connectivity.