MIL-DTL-38999 Series I connectors are designed for rugged environments, featuring up to 128 contacts in an insert with robust environmental sealing. This connector family offers versatility with front wall mount, rear wall mount, and jam nut receptacles, all meeting stringent military specifications. With a wide operating temperature range from -65 °C to 200 °C, they are ideal for harsh conditions. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for reliable connectivity. Constructed with high-strength aluminum shells and various plating options, including cadmium-free finishes, they ensure durability and performance. Suitable for diverse applications, these connectors provide secure and efficient electrical connections in demanding environments.