The most important reasons for the increasing use of socket head cap screws in industry are safety, reliability and economy. All three reasons are directly traceable to the superior performance of socket screws vs. other fasteners due to their superior strength and advanced design.Reliability, higher pressures, stresses and speeds in todays machines and equipment demand stronger, more reliable fasteners to hold them together. Rising costs make failure and downtime intolerable. Bigger, more complex units break down more frequently despite every effort to prevent it. This is why the reliability of every component has become critical. Components must stay together to function properly, and to keep them together joints must stay tight.