MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, offering robust environmental sealing and a wide operating temperature range of -65 °C to 200 °C. These harsh environment thin-walled connectors, available in various mounting options, including front and rear wall mount, jam nut, and box mount receptacles, are designed for military and aerospace applications. With 52 insert arrangements and M39029 rear release crimp contacts, they ensure reliable connectivity. The aluminum shells come in different plating options, such as cadmium and electroless nickel, with RoHS compliant finishes available. Perfect for demanding environments, these connectors provide secure and durable electrical connections.