Mil-DTL-38999 Series I connectors are designed for rugged environments, featuring up to 128 contacts and a wide operating temperature range of -65 °C to 200 °C. These connectors, available in various shell sizes and insert arrangements, offer versatility in connectivity solutions. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS-certified finishes, they ensure reliable performance. The receptacles, with front wall mount, rear wall mount, and jam nut options, accommodate diverse installation needs. Utilizing M39029 rear release crimp contacts, they guarantee secure connections. With their bayonet coupling and environment-resistant design, these connectors are ideal for demanding applications in military, aerospace, and industrial settings.