Screw ndi kuphatikiza kwa makina osavuta: ndiye, kwenikweni, ndege yokhotakhota yomwe imakulungidwa pamtengo wapakati, koma ndege yolowera (ulusi) imabweranso pamphepete chakuthwa kuzungulira kunja, komwe kumakhala ngati mphero pamene ikukankhira mkati. zinthu zomangika, ndipo shaft ndi helix zimapanganso mphero pamalopo.Zingwe zina zomangira zimapangidwira kuti zigwirizane ndi ulusi wothandizana, wotchedwa ulusi wachikazi (ulusi wamkati), nthawi zambiri zimakhala ngati chinthu cha nati chokhala ndi ulusi wamkati.Zingwe zina zomangira zimapangidwira kuti zidulire poyambira mu chinthu chofewa pomwe misala imayikidwa.Zomwe zimagwiritsidwa ntchito kwambiri ndi zomangira ndizogwirizanitsa zinthu pamodzi ndikuyika zinthu.
Zowononga nthawi zambiri zimakhala ndi mutu kumbali imodzi yomwe imalola kuti itembenuzidwe ndi chida.Zida zodziwika bwino zopangira zomangira zimakhala ndi screwdrivers ndi wrenches.Mutu nthawi zambiri umakhala wokulirapo kuposa thupi la screw, zomwe zimapangitsa kuti wononga zisapitirire mozama kuposa kutalika kwa screw ndi kupereka malo oyambira.Pali zosiyana.Bawuti ya ngolo imakhala ndi mutu wolamulira womwe sunapangidwe kuti uziyendetsedwa.Chophimba chokhazikika chikhoza kukhala ndi mutu wofanana kapena wocheperapo kusiyana ndi m'mimba mwake wakunja kwa ulusi wa zitsulo;phula lokhazikika lopanda mutu nthawi zina limatchedwa grub screw.J-bolt ili ndi mutu wooneka ngati J womwe umamizidwa mu konkriti kuti ukhale ngati bawuti ya nangula.
Gawo la cylindrical la screw kuchokera pansi pamutu mpaka kunsonga limatchedwa shank;akhoza kukhala athunthu kapena pang'ono. [1]Mtunda wapakati pa ulusi uliwonse umatchedwa phula.[2]
Zomangira zambiri ndi zomangika zimamangidwa ndi kuzungulira kozungulira, komwe kumatchedwa ulusi wakumanja.[3][4]Zomangira zokhala ndi ulusi wakumanzere zimagwiritsidwa ntchito nthawi zina zapadera, monga pomwe wonongazo zimayenderana ndi torque, zomwe zimatha kumasula sikona yakumanja.Pachifukwa ichi, chopondapo chakumanzere cha njinga chili ndi ulusi wakumanzere.
