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 reliable in extreme conditions. Available in various shell sizes and insert arrangements, they offer versatility in applications. Made of high-strength aluminum with plating options including cadmium-free finishes, they ensure durability and performance. The connectors, with front wall mount, rear wall mount, and jam nut receptacles, are MIL-DTL-38999 I compliant, meeting stringent military specifications. Utilizing M39029 rear release crimp contacts, they provide secure connections. Suitable for military, aerospace, and industrial use, these connectors guarantee reliable signal transmission in demanding environments.