Kwabo batsha kule ntsimi, i-riveting screws ngokuqinisekileyo ayiqhelekanga. Izixhobo zibandakanya intsimbi engatyiwa, intsimbi yekhabhoni, ubhedu, kunye nealuminium. Intloko ngokuqhelekileyo i-flat (i-circular okanye i-hexagonal, njl.), intonga ifakwe ngokupheleleyo, kwaye kukho amazinyo eentyatyambo kwicala elingezantsi lentloko, elinokuthi lidlale indima ekuthinteleni ukukhulula.