MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing. With an operating temperature range of -65 °C to 200 °C, these connectors are highly durable. Available in various mounting options like front wall, rear wall, jam nut, and box mounts, they offer versatility for different applications. The connectors come in aluminum shells with plating options such as cadmium and nickel, ensuring reliability. Utilizing M39029 rear release crimp contacts, they provide secure connections. With a mating type of bayonet and contact gender of male, these connectors are ideal for demanding military and industrial settings.