Zinc ya JIS yokhala ndi Self Tapping Screw yogulitsa

Zomangira zodzikhomera zokha zimakhala ndi nsonga ndi ulusi wosiyanasiyana, ndipo zimapezeka ndi pafupifupi chilichonse chotheka kupanga screw mutu.Zodziwika bwino ndi ulusi wa screw womwe umaphimba utali wonse wa wononga kuchokera kunsonga kupita kumutu ndi ulusi wotchulidwa molimba mokwanira pa gawo lomwe mukufuna, nthawi zambiri amakhala olimba.
Kwa magawo olimba monga zitsulo kapena mapulasitiki olimba, luso lodzipangira nokha nthawi zambiri limapangidwa ndi kudula kusiyana kwa kupitiriza kwa ulusi pa screw, kupanga chitoliro ndi kudula m'mphepete mofanana ndi pampopi.Chifukwa chake, pomwe makina osokera nthawi zonse sangathe kubowolo lake muzitsulo zachitsulo, kudzigunda komwe kumatha (mkati mwa malire olimba a gawo lapansi ndi kuya).
Pazigawo zofewa monga matabwa kapena mapulasitiki ofewa, luso lodzigunda limatha kubwera kuchokera kunsonga yomwe imafika pamalo a gimlet (momwe palibe chitoliro chofunikira).Monga nsonga ya msomali kapena gimlet, mfundo yoteroyo imapanga dzenje posuntha zinthu zozungulira m'malo mobowola / kudula / kuchotsa chilichonse.
Sikuti zomangira zonse zodzigunda zili ndi nsonga yakuthwa.Nsonga yamtundu wa B ndi yosamveka bwino ndipo imagwiritsidwa ntchito ndi bowo loyendetsa ndege, nthawi zambiri pamapepala.Kupanda nsonga yakuthwa ndikothandiza pakuyika ndi kunyamula ndipo muzinthu zina kutha kukhala kothandiza kuchepetsa chilolezo chofunikira kumbuyo kwa gulu lomangika kapena kupanga ulusi wochulukirapo pa screw yautali womwe wapatsidwa.
Zomangira zodziwombera zokha zitha kugawidwa m'magulu awiri;zomwe zimachotsa zinthu (makamaka pulasitiki ndi zitsulo zopyapyala) osazichotsa zimatchedwa zomangira zodzipangira ulusi;odzicheka okha okhala ndi malo akuthwa odulira omwe amachotsa zinthu pamene alowetsedwa amatchedwa kudzicheka.
Zomangira zopangira ulusi zimatha kukhala ndi mawonekedwe osakhala ozungulira, monga masinthidwe asanu a pentalobular kapena ma symmetry atatu a zomangira za Taptite.
Zomangira zodulira ulusi zimakhala ndi chitoliro chimodzi kapena zingapo zomwe zimapangidwira mu ulusi wake, zomwe zimapatsa m'mphepete mwake.