MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range from -65 °C to 200 °C. These connectors, designed for harsh environments, come in various configurations including front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles. Available in aluminum shells with plating options like cadmium and electroless nickel, they ensure reliable performance with RoHS certified finishes. Featuring 22D(22) gold-plated removable crimp contacts, these connectors guarantee efficient conductivity and durability, perfect for military and industrial applications. With a straight plug shell style, they are suitable for environment-resistant box and through bulkhead mounting receptacle types, meeting the stringent requirements of service class E.