Magiredi amphamvu kwambiri a bawuti opangidwa ndi fakitale yathu akuphatikizapo metric 8.8, 10.9, 12.9, ASTM standard UNC Gr5, 8. Mtedza wamphamvu kwambiri umaphatikizapo ma metric 8 ndi 10, ndi ANSI standard grade 5 ndi G8, zonse zomwe zimafunikira chithandizo cha kutentha.