Shoulder Bolts, also known as stripper bolts or hex socket shoulder bolts, are precision-engineered fasteners featuring a long, unthreaded shoulder between the head and the threaded portion. This design allows for smooth rotation of connected parts in mechanical assemblies, engines, and pulleys. At Adfast Components, we manufacture shoulder bolts in both metric and imperial dimensions, with thread profiles like UNC, UNF, UN, and ISO metric. Available in a wide range of materials and ASTM grades such as F568 8.8, 10.9, and 12.9, our bolts meet diverse industrial needs with high precision and durability.