UNC Socket Button Screws
A popular socket head screw which is typically used where aesthetics are a consideration, or where a lower profile domed finish is required. The hex drive is usually smaller than other types of socket screws, therfore the ultimate tightening torque is reduced. The stainless steel screws are always fully threaded but the high tensile screws may occasionally have a section of plain shank. Manufactured to ISO 7380.