Izikhathi ezibalulekile ezisetshenziswa kakhulu ezinezimfuneko zokunemba, kanye nangaphansi komthelela omkhulu, ukudlidliza noma umthwalo oshintshanayo.Isetshenziswa kakhulu emigwaqweni emikhulu namabhuloho wesitimela, izakhiwo zezimboni nezomphakathi, imibhoshongo, ama-cranes.
Imininingwane ye-hexagon head bolt:
Mayelana nokucaciswa, ububanzi bamabhawodi ekhanda elingu-hexagon bungaba ngu-4 mm, 5 mm, noma ngisho no-100 mm, futhi kunomehluko phakathi kokucaciswa nobude bangokwezifiso.Bese kuba khona impahla, enye i-alloy, enye insimbi, khona-ke intengo ehambisanayo ayifani, kumabhawodi we-hex, ukwakheka kwangaphandle kwekhanda lesikulufa kuyindilinga, phakathi nendawo kuvame ukubunjwa kwe-concave hexagonal, ngokuhlobene nezikulufu ze-hex, ikhanda linama-hexagonal.
