Hauv kev lag luam fastener, kev nkag siab txog ntau yam ntaub ntawv siv rau fasteners yog qhov tseem ceeb rau cov kws tshaj lij. Los ntawm carbon hlau mus rau stainless hlau, hlau alloy, tooj liab, thiab txhuas, txhua yam khoom muaj nws tus kheej muaj pes tsawg leeg, siv, thiab daim ntawv thov teb. Nyob rau hauv phau ntawv qhia no, peb yuav delve rau hauv cov khoom siv rau fasteners, muab kev nkag siab tob rau hauv lawv cov khoom thiab kev siv.