Experience durable connectivity with our MIL-DTL-38999 Series II connectors, known for their robust construction and high performance in harsh environments. Featuring up to 128 contacts, these circular receptacles are meticulously designed for front and rear wall mounting, jam nut, and box mounting applications. Crafted from aluminum with various plating options, including cadmium-free finishes, they ensure reliable operation in temperatures ranging from -65 °C to 200 °C. Compliant with military specification MIL-DTL-38999 II, these connectors guarantee secure mating with a bayonet coupling mechanism. Engineered for efficiency, they accommodate M39029 rear release crimp contacts, offering versatility in contact arrangements. With a service rating of I and a mating life of 500 cycles, they are ideal for demanding environments that require dependable connectivity.