MIL-DTL-38999 Series II connectors are engineered for rugged environments, offering up to 128 contacts housed in a durable insert. With a wide operating temperature range from -65°C to 200°C, these connectors are ideal for harsh conditions. Available in various mounting styles like front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility in installation. Featuring 52 insert arrangements with M39029 rear release crimp contacts, they ensure reliable connectivity. Crafted from aluminum with multiple plating options including electroless nickel, these connectors are built to last. RoHS compliant finishes are also available for environmentally conscious applications. With gold-plated contacts and a bayonet coupling design, they guarantee secure mating with 500 cycle mating life. Suitable for military and industrial use, these connectors offer excellent performance in demanding settings.