The MIL-DTL-38999 Series II connectors are designed for demanding environments, featuring up to 128 contacts housed in an environmentally sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are suitable for harsh conditions. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they offer flexibility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts in different sizes. Constructed with aluminum shells and offering multiple plating options, including cadmium-free finishes, they ensure durability and reliability. Ideal for military and industrial applications, these connectors meet MIL-DTL-38999 II specifications, guaranteeing performance in critical operations.