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 receptacle types, including front wall mount, rear wall mount, and jam nut, these connectors offer versatility in applications. With 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for reliable connectivity. Constructed with high strength aluminum shells and offered in multiple plating options, such as gold and electroless nickel, they ensure durability and performance. Suitable for military and industrial use, these connectors comply with MIL-DTL-38999 I specifications, providing a reliable solution for demanding environments.