The 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. Available in various shell sizes and insert arrangements, they offer versatility with front wall mount, rear wall mount, and jam nut receptacles. Constructed with high strength aluminum shells and offering multiple plating options, including RoHS certified finishes, these connectors ensure reliable performance. Utilizing M39029 rear release crimp contacts, they are suitable for applications requiring secure and durable electrical connections. With a mating type of bayonet and contact gender of male, they are ideal for demanding environments that require conductivity and ingress protection.