STD.ASME B18.6.3-ENGL 1998 0759670 0614162 16bASME B18.6.31998Revision of ANSI B18.6.3-1972(R1997)MACHINE SCREWSAND MACHI疵SCREW NUTSAN AMERICAN NATIONAL STANDARDSThe American Society ofMechanical Engineersopyright by the American Society Of Mechanical Engineers