Kodi pali kusiyana kotani pakati pa mitu ya skruunk ndi non countersunk screw heads

Countersunk ndi non countersunk ndi mitundu iwiri yofunikira yamapangidwe amutu wa screw. Mitu yosakanizidwa imaphatikizapo mitu yolumikizana, mitu ya mabatani, mitu yozungulira, mitu yozungulira, mitu ya flange, mitu ya hexagonal, mitu ya poto, zozungulira, masikweya, mitu ya truss, ndi zina zambiri, pomwe mapangidwe amutu omwe amatsutsana nawo amakhala ndi mitu yathyathyathya, ma ellipses, ndi mitu ya nyanga.
The countersunk screw mutu adapangidwa kuti azitsuka ndi kapena kutsika pang'ono pamwamba pa zinthuzo mukamaliza kuyika. Ili ndi mawonekedwe a conical ndi conical groove pamwamba. Cholinga cha dzenje la countersunk ndikupanga malo osalala komanso ofanana pambuyo pomangitsa screw. Chitsulo cha countersunk chikayikidwa bwino, mutu umakhala wopukutira kapena pansi pang'ono pamwamba pa zinthuzo, kuti ziwonekere mopanda msoko. Zomangira za Countersunk nthawi zambiri zimagwiritsidwa ntchito ngati pakufunika malo athyathyathya komanso osalala, ndipo amagwiritsidwa ntchito kwambiri popangira matabwa, makabati, ndi ntchito zomwe zimayika patsogolo kukongola ndi mizere yoyera.
Kumbali inayi, mitu yosakanizidwa ndi zomangira ilibe mawonekedwe owoneka bwino kapena nsonga yopindika, mutuwo uli wowonekeratu. Cholinga cha mapangidwe awo sikuyenera kusungunuka ndi pamwamba pa zinthuzo. M'malo mwake, ali ndi mitu yokulirapo, yosalala, kapena yozungulira yomwe imawonekerabe pomwe zomangirazo zimamitsidwa. Pamene mawonekedwe a wononga sizovuta ndipo ndizovomerezeka kapena zofunikira kugwiritsa ntchito mitu yotukuka kapena yokwezeka, mitu yosatsutsika nthawi zambiri imagwiritsidwa ntchito. Zomangira izi zimagwiritsidwa ntchito pomanga, zitsulo, ndi ntchito zomwe zimayika patsogolo mphamvu, kulimba, ndi magwiridwe antchito kuposa kukongola.