MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range of -65 °C to 200 °C. This harsh environment connector family includes front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, these connectors come with a choice of plating options, including cadmium-free finishes. Perfect for military and aerospace applications, they provide reliable connectivity with gold-plated contacts and a bayonet coupling mechanism. With RoHS compliance, they ensure durability and performance in demanding environments.