MIL-DTL-38999 Series I connectors feature up to 128 contacts within an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, these connectors offer front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure secure connections in aerospace and military applications. Constructed with high-strength aluminum shells, they come with plating options including cadmium-free finishes for RoHS compliance. Suitable for demanding environments, these connectors provide reliable performance with gold-plated removable crimp contacts and bayonet coupling for easy mating.