Dab tsi yog hnyav Hex Bolts

Hnyav plaub hau ua haujlwm hex bolts yog ib hom ntawm hex bolts. Lawv lub taub hau dav dav dav. Feem ntau siv A325, A325M, A490, A490M thiab lwm cov qauv, thiab American Standard ASME / ANSI B18.2.1-1981, GBB1228 thiab lwm cov qauv steel hnyav-ua haujlwm hex bolts. Hnyav plaub hau ua haujlwm hex bolts yog siv rau cov khoom siv ua haujlwm hnyav A193, A194, A563, thiab lwm yam, feem ntau yog siv hauv kev tsim kho, tsheb, choj thiab qhov kev lag luam.