Ubunini bwa Bolt busanzwe busanzwe: GB / T5783, GB / T5782, SH / T3404, DIN933, DIN931, ISO4014, ISO4017, UNI5737 / UNI5739 Ubutaliyani, ASME B18.2.3.1m, ASME B18.2.3.5m, ASME B18.2.3. .5m B18.2.3.6M metric yo hanze ya hexagon, ANSI / ASME B18.2.1 nibindi bipimo bisanzwe.