MIL-DTL-38999 Series II connectors are designed for harsh environments with up to 128 contacts in an insert, offering robust performance in extreme conditions. Featuring front and rear wall mounts, jam nut, and box mount receptacles, they provide versatile connectivity options. The connectors, crafted from durable aluminum, are sealed for environmental protection and can withstand temperatures ranging from -65 °C to 200 °C. With various plating options available, including cadmium-free finishes, they ensure reliable signal transmission. Utilizing M39029 rear release crimp contacts, these connectors guarantee secure and efficient connections. Suitable for military and industrial applications, they meet stringent quality standards for performance and durability.