MIL-DTL-38999 Series II connectors offer high performance with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they feature various mounting options including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for reliable connections. With a wide range of plating options, including RoHS certified finishes, they ensure durability and longevity. Operating at temperatures between -65 °C and 200 °C, these connectors are ideal for military and aerospace applications requiring secure and efficient electrical connections.