Zovuta zachitsulo zamagalasi nthawi zambiri zimaphatikizidwa ndi mafakitale polytetrafluorothylene) pazogwiritsa ntchito zomwe zimafunikira nyonga zapamwamba komanso zothandiza. Sai-Aisi 1018, 1020, 1040, 1045 \ / ck45 ndi ma grade wamba can steel omwe amagwiritsidwa ntchito kupanga zosinthazi. Industry specifications such as ASTM A36, A193, A194, A307, A354, A449, A540, A563, F1554 and SAE J429 cover high strength carbon steel fastener grades.