MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options, including front wall, rear wall, jam nut, and box mount receptacles, these connectors offer versatility in installation. With 52 insert arrangements and M39029 rear release crimp contacts, they ensure reliable connections. Constructed with aluminum shells and offering multiple plating options, such as cadmium and nickel, they cater to diverse industrial needs. RoHS compliant finishes are also available. Ideal for military and aerospace applications, these connectors provide durability and performance in demanding environments.