MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts in an insert with environmental sealing. Operating between -65 °C and 200 °C, these connectors offer versatility in harsh conditions. Choose from various receptacle options, such as front and rear wall mount, jam nut, and box mount configurations. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for reliable connections. Constructed with aluminum shells and offering plating options like cadmium and nickel, these connectors ensure durability. With RoHS compliant finishes and a service rating of I, they are suitable for demanding applications.