MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. These environmentally sealed connectors come in a variety of mounting options, including front and rear wall mount and jam nut receptacles, offering versatility for different applications. Utilizing M39029 rear release crimp contacts, they ensure secure and reliable connections in sizes 22D, 22M, 22, 20, 16, and 8. The high strength aluminum shells are available in various plating options, including cadmium-free finishes, meeting RoHS compliance standards. With a mating type of bayonet, these connectors are suitable for military and industrial use, providing durability and performance in demanding conditions.