A85049601A12 is a strain relief clamp backshell designed to provide strain relief, environmental protection, and EMI/RFI shielding at the termination area of circular connectors. This straight-configuration backshell features a spin coupling mechanism that allows easy attachment to the connector without turning the entire backshell body, and includes lock wire holes on the coupling nut to prevent accidental decoupling. The accessory is constructed from aluminum alloy with cadmium olive drab finish over electroless nickel plating, meeting military specifications for harsh and demanding environments. It is commonly used in aerospace, military, and industrial applications where reliable cable management and connector protection are essential.