This Standard is intended to cover the complete gen-eral and dimensionaldata forthe various types ofslotted and recessed head machine screws and machine screw nuts recognized as American National Standard. Also included are appendices that provide specifications and instructions for the protrusion gaging of flat count-ersunk head screws; across-corners gaging of hex head screws; penetration gaging and wobble gaging of recessed head screws; wrench openings for hex and square products; thread dimensions for the No. 0000,No. 000, and No. 00 sizes; and formulas onwhich dimen-sional data are based. It shall be understood, however,that where questions arise concerning acceptance of product, the dimensions in the tables shall govern over recalculation by formula.
