MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65°C to 200°C, these connectors offer reliable performance in extreme conditions. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different applications. The connectors come in aluminum shells with options for plating, including cadmium-free finishes. Utilizing M39029 rear release crimp contacts, they ensure secure connections in aerospace and military systems. Each connector is meticulously engineered for durability, with gold-plated contacts for optimal conductivity. RoHS compliant and with a service rating of I, these connectors meet stringent quality standards for mission-critical operations.