MIL-DTL-38999 Series II connectors offer robust connectivity with up to 128 contacts in a sealed insert. Designed for harsh environments, they operate efficiently in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for reliable performance. Crafted from aluminum with a choice of plating finishes, including RoHS-certified options, they ensure durability and compliance with environmental standards. The MS27473 model, a straight plug with 18 gold-plated contacts, is a versatile choice for military and industrial applications, offering secure bayonet coupling and N-keyway polarization. With a service rating of I and a mating life of 500 cycles, they guarantee long-lasting, high-quality connectivity in demanding settings.