MIL-DTL-38999 Series I connectors feature up to 128 contacts, offering high-density connectivity in a rugged, environmentally sealed design. With an operating temperature range of -65 °C to 200 °C, these connectors are ideal for harsh environments. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for reliable performance. The connectors come in high strength aluminum shells with a choice of plating options, including cadmium-free finishes for RoHS compliance. Suitable for military and aerospace applications, they offer secure bayonet coupling and are designed for back panel box mounting. With gold-plated contacts and a service rating of I, these connectors ensure durable and high-quality electrical connections for demanding scenarios.