In getting these custom modified socket cap screws made we started with standard off the shelf 2-56 X 3/4″ socket cap screws in 18-8 stainless steel material – our customer required the length to be cut and chamfered down to .745″ and a groove to be added 1/8″ from the point. The groove measured .052″ to .054″ in diameter and .061 to .071″ in length. Both modifications were relatively simple and we were able to get the parts ready within 2-3 weeks from purchase order placement.