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 configurations including front and rear wall mount, as well as jam nut receptacles, these connectors offer reliable performance. Utilizing M39029 rear release crimp contacts, they come in sizes 22D, 22M, 22, 20, 16, and 8 for versatility. With high strength aluminum shells and multiple plating options such as gold, electroless nickel, and cadmium-free finishes, they ensure durability and conductivity. Compliant with MIL-DTL-38999 I specifications, these circular receptacles are ideal for demanding applications requiring rugged connectivity.