Kev faib tawm ntawm hexagon bolts: 1. Raws li txoj kev quab yuam ntawm kev sib txuas, cov bolts siv rau lub qhov rooj hinged yuav tsum sib phim nrog qhov loj ntawm lub qhov thiab siv nyob rau hauv cov ntaub ntawv ntawm transverse quab yuam; 2, raws li lub taub hau zoo ntawm lub taub hau hexagonal, puag ncig lub taub hau, square taub hau, countersunk taub hau, thiab lwm yam ...
Nyeem ntxiv