The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert for high-density applications. With front and rear wall mount options, as well as jam nut and box mount receptacles, they offer versatile installation possibilities. These connectors, boasting a wide operating temperature range from -65°C to 200°C, are ideal for demanding military and industrial environments. Constructed with durable aluminum shells and available in various plating options, including RoHS compliant finishes, they ensure reliable performance in rugged conditions. Removable crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, plated with gold for optimal conductivity, guarantee secure connections. Featuring a bayonet coupling and N keyway polarization, they offer ease of mating and reliable alignment. Trusted for their environmental resistance and service class E rating, these connectors are suitable for applications requiring robust and high-performance connectivity.