Our MIL-DTL-38999 Series I connectors feature up to 128 contacts in a durable insert, designed for harsh environments with a wide operating temperature range of -65°C to 200°C. Available in various shell sizes and insert arrangements, they offer versatility for different applications. These connectors are environmentally sealed and come in high-strength aluminum shells with a choice of plating options including cadmium-free finishes. With front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they provide secure and reliable connections. Utilizing M39029 rear release crimp contacts, they ensure efficient connectivity. Compliant with military specification MIL-DTL-38999 I, these circular plugs are suitable for demanding environments where durability and performance are essential.