MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are reliable in extreme conditions. Available in various shell sizes and insert arrangements, they offer flexibility for different applications. Made of high strength aluminum with options for plating finishes, including RoHS certified cadmium free coatings, they ensure durability and performance. The connectors come in receptacle types such as front wall mount, rear wall mount, and jam nut, with RFI grounding plugs for added functionality. Utilizing M39029 rear release crimp contacts, they provide secure connections in sizes 22D, 22M, 22, 20, 16, and 8. Suitable for military and industrial use, these connectors meet MIL-DTL-38999 I specifications, making them ideal for demanding environments requiring high reliability.