MIL-DTL-38999 Series I connectors offer robust connectivity with up to 128 contacts, ideal for harsh environments. Featuring front wall mount, rear wall mount, and jam nut receptacles, they provide versatility in installation. These connectors, complying with military specification MIL-DTL-38999 I, ensure reliable performance in extreme conditions, with an operating temperature range from -65 °C to 200 °C. Constructed with high-strength aluminum shells and available in various plating options, including RoHS-certified finishes, they guarantee durability and compliance with environmental standards. The connectors accommodate M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, facilitating secure and efficient connections. With gold-plated contacts and a service rating of I, these connectors ensure optimal conductivity and longevity, with a mating life of 500 cycles. Suitable for applications requiring environment-resistant wall and jam nut mounting receptacles and plugs, they offer reliable performance in critical operations.