Ukuran standar tampilan Bolt opsional: GB / T5783, GB / T5782, SH / T3404, DIN933, DIN931, ISO4014, ISO4017, UNI5737 / UNI5739 standar Italia, ASME B18.2.3.1m, ASME B18.2.3.1m, ASME B18.2.3.5m. .5m B18.2.3.6M metrik hexagon njaba, ANSI / ASME B18.2.1 lan ukuran standar liyane.