Bolt zoo li tus qauv loj xaiv: GB / T5783, GB / T5782, SH / T3404, DIN933, DIN931, ISO4014, ISO4017, UNI5737 / UNI5739 Italian tus qauv, ASME B18.2.3.1m, ASME B18.2.3.15m, ASME B18.2.3.3. .5m B18.2.3.6M metric txheej hexagon, ANSI/ASME B18.2.1 thiab lwm yam txheem qhov ntev.