The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert and environmental sealing for reliable performance. With an operating temperature range of -65 °C to 200 °C, these connectors offer versatility in various applications. Available in aluminum shells with multiple plating options, including cadmium-free finishes, they ensure durability and compliance with RoHS regulations. The connectors come in different styles, such as front and rear wall mounts, jam nuts, and box mounts, with receptacles and plugs for easy installation. Utilizing M39029 rear release crimp contacts, they guarantee secure connections in sizes 22D, 22M, 22, 20, 16, and 12. Ideal for military and industrial use, the MIL-DTL-38999 Series II connectors provide reliable connectivity in demanding conditions.