ʻO nā māka bolt ikaika kiʻekiʻe i hana ʻia e kā mākou hale hana me metric 8.8, 10.9, 12.9, ASTM maʻamau UNC Gr5, 8 mau māka. ʻO nā nati ikaika kiʻekiʻe he metric 8 a me 10 māka, a me ANSI maʻamau papa 5 a me G8, ʻo ia mau mea a pau e pono ai ka mālama wela.