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 rugged 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, accommodating M39029 rear release crimp contacts. Constructed with aluminum shells and offering multiple plating options, they ensure durability and reliable performance. With RoHS certified cadmium-free finishes available, they meet environmental standards. Suitable for military and industrial use, MIL-DTL-38999 Series II connectors provide secure and efficient electrical connections in demanding conditions.