MIL-DTL-38999 Series I connectors offer high-performance connectivity solutions for 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 utilize M39029 rear release crimp contacts for secure connections. The connectors come in durable aluminum shells with multiple plating options, including cadmium-free finishes for RoHS compliance. Offering front wall mount, rear wall mount, and jam nut receptacles, they ensure reliable performance in military and industrial settings. These environmentally sealed connectors are designed to withstand the rigors of mission-critical operations, making them a dependable choice for aerospace, defense, and other rugged applications.