As compared to ordinary fasteners, less socket screws of the same size can achieve the same clamping force in a joint, As fewer screws are required for a given job, fewer holes are required to be drilled and tapped, There will be weight reduction on...
Socket head cap screws are used for applications with limited space. They have cylindrical head and internal wrenching features (mostly hexagon socket) that allow them to be used in locations where externally wrenched fasteners aren't desirable....
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