MIL-DTL-38999 Series I connectors offer high performance in harsh environments, featuring up to 128 contacts in an insert. With a wide operating temperature range from -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. The connectors boast front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs for added versatility. Constructed with high-strength aluminum shells and offered in different plating options, including cadmium-free finishes, they ensure reliable connectivity. RoHS compliance is available, making them environmentally friendly choices for military and industrial applications.