Muindasitiri yekugadzira, fasteners zvinhu zvakakosha zvekubatanidza nekugadzirisa zvikamu. Iwo emhando dzakasiyana uye ane mabasa akasiyana. Kubva pamabhoti, nzungu, screws, rivets, washers, kuchengetedza zvindori, mapini, nezvimwe, imwe neimwe yekusunga inoita basa rinokosha. Zvisinei, mukutarisana nemhando dzakasiyana-siyana dzezvisarudzo, zvinonyanya kukosha kuve nechokwadi chokuti zvisungo zvakasarudzwa zvinogona kuzadzisa zvinodiwa zvemamiriro chaiwo ekushanda.