Imperial

Shoulder Socket Screws, also known as shoulder bolts, feature a cylindrical, unthreaded section – referred to as the “shoulder” – located between the head and the smaller-diameter threaded portion. These screws are measured by the shoulder length only, not the threaded part. They are commonly used as mounting pins, pivot points, or to provide a bearing surface for rotating components. The unthreaded shoulder acts as a spacer or guide, allowing for smooth movement and accurate positioning of parts. They also feature a hex recess drive, making them suitable for installation in tight or confined spaces. Imperial Shoulder Socket Screws are designed according to the imperial measurement system, with thread dimensions specified in inches.