MIL-DTL-38999 Series I connectors boast exceptional durability and versatility, featuring up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors offer a wide operating temperature range from -65°C to 200°C. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts and come in high-strength aluminum shells with multiple plating options. With RoHS certified finishes available, these connectors ensure reliable performance in demanding applications. Perfect for military and industrial use, they provide secure electrical connections with a bayonet coupling design and are rated for 500 mating cycles.