This standard specifies the technical requirements, test methods, inspection rules, packaging, marking, transportation and storage of solid wrenches, ring wrenches, and dual-purpose wrenches. This standard applies to solid wrenches, ring wrenches, and dual-purpose wrenches.
GB/T 4393-1995 history
2008GB/T 4393-2008 Open end wrenches,box wrenches and combination wrenches.Technical specifications
1995GB/T 4393-1995 Open-end wrenches, box wrenches and combination wrenches--Technical specifications