MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various mounting styles such as front wall mount, 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, utilizing M39029 rear release crimp contacts. Constructed with aluminum shells and offering multiple plating options including cadmium-free finishes, they ensure durability and reliability. Meeting military specification MIL-DTL-38999 II, these connectors guarantee high performance in critical environments.