The MIL-DTL-38999 Series I connectors are designed for rugged environments, featuring up to 128 contacts within an insert for secure connectivity. With a wide operating temperature range of -65 °C to 200 °C, these connectors are suitable for demanding applications. Available in various shell sizes and insert arrangements, they offer flexibility for different configurations. Constructed with high-strength aluminum shells and offered in RoHS compliant finishes, including cadmium-free options, they ensure reliable performance while meeting environmental standards. The connectors, with options for front or rear wall mount and jam nut receptacles, feature bayonet coupling for easy installation. Utilizing M39029 rear release crimp contacts, they provide efficient and durable connections. Suitable for military and industrial use, these connectors are built to withstand harsh conditions, making them ideal for a wide range of applications.