MIL-DTL-38999 Series I connectors offer high performance in harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65°C to 200°C, they ensure reliability in extreme conditions. Available in various configurations including front and rear wall mount receptacles, as well as jam nut receptacles, these connectors meet military specification standards. Utilizing M39029 rear release crimp contacts in different sizes, they provide flexibility in design. The connectors come in durable aluminum shells with options for plating, including cadmium-free finishes. Their bayonet coupling and box mounting flange make them ideal for secure and efficient installations. With a service rating of II and a service class of E, they guarantee performance and longevity, suitable for demanding applications.