MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they offer flexibility in design. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS-certified finishes, these connectors ensure reliable performance. The wall-mounting flange, rear wall mount, and jam nut receptacles, along with RFI grounding plugs, cater to diverse installation needs. Utilizing M39029 rear release crimp contacts, they guarantee secure connections. Suitable for military and industrial use, these connectors are engineered for durability, with gold-plated contacts for enhanced conductivity and a mating life of 500 cycles. Their conductive nature and ingress protection make them suitable for environments requiring reliable electrical connections.