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