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 from -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 more, they offer versatility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Constructed with aluminum shells and offering plating options including gold, electroless nickel, and cadmium-free finishes, they ensure durability and reliability. Meeting military specification MIL-DTL-38999 II, these connectors provide secure and efficient electrical connections in critical environments.