MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in a single insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility for installation. Featuring thin-walled construction and utilizing M39029 rear release crimp contacts, these connectors ensure reliable performance. Made of aluminum with options for plating including gold, electroless nickel, and cadmium-free finishes, they are durable and corrosion-resistant. With a mating type of bayonet and a service rating of M, they meet stringent military specifications for quality and performance. Suitable for both military and commercial use, these connectors are essential for maintaining connectivity in challenging environments.