Old screw and new M4 bolt

Although attached with a nyloc nut the original screw was a regular soft variety that can't be tightened up with much force. It had areas of thread that were worn away by the hinge and was bent. The metric M4 socket head bolt is a 12.9 grade extreme high tensile bolt with spring washer and new nyloc. The 4mm diameter is slightly bigger than the original screw so the wrist hinge will have to be drilled out. It is 25mm long, or 1", exactly the same length as the original screw.