The MIL-DTL-38999 Series I connectors offer robust connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature various mounting options including front and rear wall mount, and jam nut receptacles. With a wide operating temperature range from -65°C to 200°C, they ensure reliable performance in extreme conditions. Utilizing M39029 rear release crimp contacts, they come in 9 shell sizes and 52 insert arrangements. The high strength aluminum shells are available in multiple plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with RoHS certified cadmium-free finishes. Perfect for military and industrial applications, these connectors guarantee durability with their gold-plated female contacts, bayonet coupling, and superior conductivity. Meeting MIL-DTL-38999 I specifications, they provide efficient and secure electrical connections for critical systems.