Muaj ib txwm muaj cov neeg muas zaub nug, uas ntawm cov hlau tsis muaj steel hlau thiab 8.8 screws yog nyuaj thiab siab dua. Yog tias nws tsis yog tshwj xeeb hauv kev ua screws, nws yuav tsis meej rau qhov no. Tab sis yog hais tias nws yog ib lub tshuab hluav taws xob uas ua rau screws, los yog ib tug neeg uas tsis muaj qhov ntsia hlau zoo. Tej zaum nws yuav ntshiab ntau dua rau lawv.
Stainless hlau kov ntsia hlau
Nyob rau hauv dav dav, lub hardness ntawm stainless hlau screws nyob ntawm lub hardness ntawm stainless hlau ntsia hlau xaim. Nrog ib tug zoo stainless hlau ntsia hlau khoom, lub hardness yuav tsum muaj zog, thiab qhov txawv yog weaker. Thiab 8.8 screws, feem ntau yuav nrog 1018 ntsia hlau xaim, 10B21, thiab 45 steel hlau xov hlau rau ntau lawm, tom qab tus dej txias tawm ntawm cov ntsia hlau, tseem xav tau txoj kev kho mob. Qhov kev ua haujlwm nyuaj ntawm HV450-550. Yog tias koj hais tias koj yuav tsum tau sib piv ntawm cov hlau tsis txhuam thiab 8.8-theem screws yog ib qho nyuaj, nws yog qhov tsim nyog hais tias 8.8-qib screws yog tus yooj yim dua thiab muaj kev ntsuas zog dua.