The MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environmental conditions with an operating temperature range of -65 °C to 200 °C. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, these connectors offer versatility in applications. With 52 insert arrangements and M39029 rear release crimp contacts, they ensure reliable connectivity. Constructed with aluminum shells and offering plating options including electroless nickel and cadmium finishes, they meet RoHS compliance standards. Suitable for military and industrial use, these connectors provide a durable and high-performance solution for demanding environments.