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 mounting options like front and rear wall mount, as well as jam nut receptacles, they offer RFI grounding plugs for added functionality. With 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high strength aluminum shells and plated in options such as cadmium and nickel, they ensure durability and reliability. RoHS certified finishes are also available, catering to diverse industrial needs.