The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With an operating temperature range from -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, with M39029 rear release crimp contacts ensuring secure connections. Constructed with aluminum shells and offering multiple plating options, including RoHS certified finishes, they provide durability and reliability. Suitable for military and industrial use, these connectors meet MIL-DTL-38999 II specifications, guaranteeing high performance in challenging conditions.