Muzomangamanga ndi mafakitale, zomangira za countersunk zimagwiritsidwa ntchito kwambiri chifukwa cha kuthekera kwawo kulowa m'malo ndikukhalabe mawonekedwe. Mawonekedwe osiyanasiyana a zomangira zotsukira, monga ngati maluwa, oboola pakati, opindika, ndi ma hexagonal, amalola ...
Werengani zambiri