This International Standard specifies the general requirements for standardized bolts, screws, studs and nuts, but is also recommended for these non-standardized fasteners. It is intended to be used with reference to the related International Standards on tolerances, mechanical and performance characteristics, geometrical features, surface discontinuities, surface finishes and quality aspects. 

    中文版參考：GB/T 16938-2008 等同采用了 ISO 8992:2005