MIL-DTL-38999 Series II connectors offer reliable connectivity in harsh environments with up to 128 contacts in an insert, sealed for protection. With an operating temperature range of -65°C to 200°C, these connectors are versatile for various applications. Featuring multiple mounting options including front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles, they ensure flexibility in installation. Available in aluminum shells with various plating options such as electroless nickel and cadmium finishes, they provide durability and corrosion resistance. Compliant with military specification MIL-DTL-38999 II, these circular plugs guarantee high performance with gold-plated contacts, removable crimp contacts, and EMI/RFI shielding. Suitable for demanding environments, they offer a mating type of bayonet coupling and a service rating of I. With a service class detail of environment resistant wall and jam nut mounting receptacle and plug types, they ensure reliable performance in challenging conditions. Non-RoHS compliant.