The MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts in an insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for harsh conditions. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. Constructed with aluminum shells and offering multiple plating options, including RoHS compliant finishes, these connectors ensure durability and reliability. With M39029 rear release crimp contacts, they provide secure connections. The straight plug design with a bayonet coupling mechanism makes them easy to mate and unmate. Suitable for military and industrial applications, these connectors are a dependable choice for demanding environments.