MIL-DTL-38999 Series I connectors offer robust solutions for severe environmental conditions, featuring up to 128 contacts in an insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various configurations such as front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs, they ensure reliable connectivity. Designed for versatility, they come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts in multiple sizes. Constructed with high-strength aluminum shells and offering a choice of plating options including cadmium-free finishes, these connectors are suitable for diverse industrial and military uses that demand durability and performance in harsh environments.