MIL-DTL-38999 Series I connectors feature front wall mount, rear wall mount, and jam nut receptacles, providing up to 128 environmentally sealed contacts for reliable connectivity in harsh environments. With an operating temperature range from -65 °C to 200 °C, these connectors offer versatility and durability. Available in 9 shell sizes and 52 insert arrangements, they accommodate M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS certified finishes, they ensure long-lasting performance. Ideal for military and industrial applications, these connectors guarantee secure and efficient data transmission, with a service rating of I and a minimum mating life of 500 cycles.