MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options such as front wall, rear wall, and jam nut receptacles, they offer versatility for different applications. Utilizing M39029 rear release crimp contacts, these connectors ensure reliable connections with sizes ranging from 22D to 8. Constructed with high-strength aluminum shells, they come with a selection of plating options including cadmium-free finishes for RoHS compliance. With a bayonet coupling and gold-plated contacts, they provide secure and durable connections suitable for military and industrial use.