MIL-DTL-38999 Series I connectors offer high-performance connectivity for harsh environments. With up to 128 contacts in an insert, they provide robust sealing and reliable operation in extreme conditions, with a wide temperature range from -65 °C to 200 °C. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors are versatile for various applications. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8 (coax and twinax). Constructed with high-strength aluminum shells and offering plating options such as electroless nickel and cadmium finishes, they ensure durability and performance. RoHS certified options are also available, meeting environmental standards. Perfect for military and industrial use, MIL-DTL-38999 I connectors are designed for reliable and long-lasting connectivity in demanding environments.