The MIL-DTL-28840 harsh environment connectors are designed for demanding applications, offering a range of receptacles and plugs with various backshell options for flexibility in installation. With 9 shell sizes and 9 insert arrangements, these connectors accommodate M39029 size 20 crimp removable contacts, ensuring reliable connections. Available in wrought aluminum, corrosion-resistant, and stainless steel options, they cater to diverse environmental needs. The selection of plating options, including olive drab cadmium and black zinc nickel, provides enhanced durability. Meeting stringent military specifications, these circular threaded connectors feature high shock and shipboard capabilities, making them ideal for rugged use. With RoHS-compliant finishes available, they guarantee both performance and environmental responsibility.