MIL-DTL-38999 Series I connectors offer a robust solution for harsh environments, featuring up to 128 contacts in a sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they utilize rear release crimp contacts for secure connections. The connectors come in high-strength aluminum shells with options for different plating finishes, including RoHS-certified cadmium-free coatings. Designed for military specifications, they provide reliable performance with their bayonet coupling and environment-resistant construction, making them suitable for back panel and box mounting applications.