The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in installation. These connectors are environmentally sealed, ensuring reliable performance in extreme conditions with an operating temperature range of -65 °C to 200 °C. Compliant with military specification MIL-DTL-38999 I, they guarantee durability and quality. Available in various shell sizes and insert arrangements, they accommodate diverse connectivity needs. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high-strength aluminum shells and offering multiple plating options, including cadmium-free finishes, they prioritize both performance and environmental responsibility. With a bayonet coupling and gold contact plating, these connectors provide efficient and durable electrical connections. Suitable for applications requiring a service class of T, they are ideal for demanding environments. The Series I connectors, with their reliable performance and robust construction, are essential components for critical systems that demand high-quality connectivity solutions.