Shoulder Screw: 3/8" Shoulder Dia, 3" Shoulder Length, 5/16-18, 18-8 Stainless Steel, Hex Socket MPN:R57600550

The shoulder screw is a versatile fastener designed to provide positive locking action against axial or shear movements between threaded components while preventing backout situations from occurring due to vibrations during operation. Made from 18-8 stainless steel, it offers excellent corrosion resistance and tensile strength in harsh environments such as wet, outdoor conditions or chemical exposure. Its 3/8'' shoulder diameter facilitates smooth rotation onto mating surfaces while providing adequate purchase against loosening due to external torque forces. The 5/16-18 threads accommodate a fine pitch size #6 UNC fit which aligns well with flanges or brackets in structural applications such as bridge building, ship building, rail systems, equipment supports and other infrastructure projects where galvanic corrosion protection is vital to maintaining longevity of assemblies. A hexagon socket drives easily via hand tools or automated machinery allowing torque control when setting fasteners without stripping during installation or removal. Its application spans across industries such as construction, transportation, manufacturing and heavy machinery sectors where durable, reliable fastening solutions are required to maintain safe operational integrity of components.