MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with a wide operating temperature range from -65°C to 200°C. Available in various shell sizes and insert arrangements, these connectors offer versatility for different applications. Constructed with high-strength aluminum shells and offered in RoHS-certified finishes, including cadmium-free options, they ensure reliable performance. The connector family includes front and rear wall mount receptacles, jam nut receptacles, and RFI grounding plugs, all meeting military specification MIL-DTL-38999 I. Utilizing M39029 rear release crimp contacts, they guarantee secure and efficient connections, with options for gold contact plating and conductive conductivity. Suitable for back panel box mounting with bayonet coupling, these connectors are ideal for demanding environments with a service rating of II and service class E. With a contact mating life of 500 cycles and ingress protection, they are designed for durability in rugged conditions.