This standard specifies the code name, technical requirements, inspection and test methods, inspection rules, markings, rust-proof packaging, transportation and storage of the automobile drive shaft universal joint cross shaft assembly (hereinafter referred to as the assembly). This standard applies to universal joint cross shaft assemblies of drive shafts of medium and light trucks, buses and cars. Universal joint cross-shaft assemblies on heavy-duty trucks, construction machinery and automobile steering knuckles can also be used as a reference.