MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments. With an operating temperature range of -65 °C to 200 °C, these connectors offer versatility and reliability. Available in various styles including front wall mount, rear wall mount, and jam nut receptacles, they meet rigorous military specifications. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS-certified finishes, they ensure durability and performance. Suitable for applications requiring rugged connectivity, these connectors provide secure and efficient electrical connections in demanding environments.