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 front wall mount, rear wall mount, and jam nut receptacles, they offer RFI grounding plugs and come in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 8 (coax and twinax). These connectors are constructed with high-strength aluminum shells and offer various plating options, including cadmium-free finishes. RoHS certified, they provide reliable performance in demanding applications. Perfect for military and aerospace use, these connectors meet stringent MIL-DTL-38999 I specifications, making them ideal for critical electronic systems.