MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating range of -65 °C to 200 °C. Available in front and rear wall mount, as well as jam nut receptacles, they offer RFI grounding. With 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts (sizes 22D, 22M, 22, 20, 16, and 8) including coax and twinax options. Constructed from high-strength aluminum, they come with various plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum. RoHS compliant finishes are also available. Perfect for military and industrial applications, these connectors ensure reliable performance in demanding conditions.