Bophara bo kaholimo ba screw ea countersunk e kholo, 'me e ka ba chitja kapa e hexagonal, e le hore lisebelisoa tse kang screwdriver kapa wrench li ka fetola screw.Bokaholimo bo hlahelletseng bo boetse bo thibela screw ho cheka ho teba haholo ka thepa le ho eketsa khatello ea screw holim'a thepa.Hangata li-screw tsa Countersunk li ka ntšoa kapa tsa kenngoa hape ka thato ntle le ho senya bokhoni ba tsona, hape li ka fana ka matla a maholo ho feta lipekere, hape li ka sebelisoa hape.Hlooho ea "countersunk screw" e ka teba ka ho feletseng holim'a thepa ea sehlahisoa, 'me hlooho ea screw e ke ke ea bapala karolo ea ho thibela.
E sebelisoa hangata ho lisebelisoa tsa motlakase, mochini oa elektroniki, lisebelisoa tsa mochini, lisebelisoa tsa ntlo, lihlahisoa tsa dijithale, merero ea ho boloka metsi, mokhabiso le kaho, jj.