Raws li txoj kev sib txuas yog kev ntxhov siab, bolts tau muab faib ua cov bolts zoo tib yam thiab cov uas siv cov qhov reamed. Raws li lub taub hau zoo, muaj lub taub hau hexagonal, puag ncig lub taub hau, lub taub hau square, countersunk taub hau, thiab lwm yam. Lub taub hau hexagonal feem ntau yog siv. Countersunk taub hau feem ntau yog siv rau hauv daim ntawv thov uas xav tau kev sib txuas dej ntws.
U-bolts, tseem hu ua U- zoo li tus bolts, tsis yog- tus qauv. Lawv yog U- zoo li tus thiab muaj xov ntawm ob qho kawg rau kev sib txuas nrog txiv ntseej. Lawv feem ntau yog siv los kho cov khoom siv tubular xws li cov kav dej lossis cov khoom tiaj tus xws li lub tsheb nplooj ntoos hlav. Vim txoj kev uas lawv kho cov khoom zoo ib yam li tus neeg caij nees, lawv hu ua U-bolts (los yog eeb bolts). Lawv muab faib ua ob hom raws li xov ntev: tag nrho - xov thiab ib nrab threaded.
Raws li cov xov profile, lawv tau muab faib ua cov xov coarse thiab xov zoo. Coarse xov tsis qhia nyob rau hauv lub bolt marking. Bolts tau muab faib ua yim qib: 3.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, thiab 12.9. Bolts ntawm qib 8.8 thiab siab dua (nrog rau 8.8) yog ua los ntawm qis- carbon alloy steel lossis nruab nrab- carbon steel thiab yog cua sov-kho (quenching + tempering), feem ntau hu ua siab - lub zog bolts. Bolts qis dua qib 8.8 (tsis suav nrog 8.8) feem ntau hu ua bolts zoo tib yam.
Ordinary bolts tau muab faib ua peb qib raws li kev tsim khoom precision: A, B, thiab C. Qib A thiab B yog cov bolts precision, thiab qib C yog cov ntsia hlau ntxhib. Rau kev sib txuas bolts siv hauv cov qauv steel, tshwj tsis yog tias tau teev tseg, lawv feem ntau yog qib C bolts zoo tib yam.