1. Malingaliro
Bolt yakunja ya hexagonal ndi chowonjezera chachitsulo, chomwe chimadziwikanso ngati screw yakunja ya hexagonal, screw yakunja ya hexagonal kapena bolt yakunja ya hexagonal.

2.Kuchiza pamwamba
Popanga ma bolts, chithandizo chapamwamba ndi chimodzi mwazinthu zofunikira kwambiri. Ikhoza kupanga pamwamba pa bolt kukwaniritsa zofunikira zina ndikuwongolera kukana kwa dzimbiri, mphamvu ndi kukongola kwake.
Pali mitundu yambiri ya njira zochizira ma bolts, zodziwika bwino ndi izi:
Galvanizing: Mabotiwo amamizidwa mu njira ya zinki, ndipo zinc imakutidwa pamwamba pa bolts wosanjikiza ndi wosanjikiza kudzera mu electrochemical reaction, kuwapangitsa kuti asachite dzimbiri komanso kuti asachite dzimbiri.
Kutentha-kuviika galvanizing: Mabotiwo akapangidwa, amamizidwa m'madzi osungunuka a zinki, ndipo wosanjikiza wa zinc amapangidwa pamtunda kudzera munjira yamankhwala kuti akwaniritse zotsutsana ndi dzimbiri, zosawononga dzimbiri ndi zina.
Kuchiza kwakuda: Kanema wakuda wachitsulo wa oxide amapangidwa pamwamba pa bawuti kudzera pamachitidwe amankhwala kuti apititse patsogolo kukana kwa dzimbiri.
Chithandizo cha Phosphating: Zilowerereni bawuti mu njira ya phosphating kuti mupange filimu ya phosphating pamwamba kuti isachite dzimbiri.
Chithandizo choumitsa: Kupyolera mu chithandizo cha kutentha kapena kupopera mankhwala pamwamba, chophimba chokhala ndi kuuma kwakukulu chimapangidwa pamwamba pa bolt kuti chikhale ndi mphamvu komanso kukana kuvala.
Zomwe zili pamwambazi ndi njira zothandizira bolt pamwamba. Njira zochiritsira zosiyanasiyana zimagwirizana ndi zochitika zosiyanasiyana zogwiritsira ntchito komanso zofunikira. Pochita chithandizo cha bolt pamwamba, kuyenera kuchitidwa molingana ndi miyezo yofananira ndi mafotokozedwe kuti zitsimikizire kuti ma bolts omwe amathandizidwa akukwaniritsa zofunikira zogwirira ntchito.

3. Kuchita bwino
Boloti yakunja ya hexagonal bolt imakhala ndi magawo awiri a manambala, omwe motsatana amayimira kuchuluka kwamphamvu kwamphamvu komanso kuchuluka kwa mphamvu zokolola za bawuti.
Mwachitsanzo, bawuti yokhala ndi magwiridwe antchito 4.6 imatanthauza:
a. Mphamvu yodziwika bwino ya bawuti imafika 400MPa;
b. Chiŵerengero cha mphamvu zokolola za bolt ndi 0,6;
c. Mphamvu zokolola mwadzina za bawuti zimafika pamlingo wa 400 × 0.6 = 240MPa
Magwiridwe a 10.9 mabawuti amphamvu kwambiri, pambuyo pa chithandizo cha kutentha, amatha kukwaniritsa:
a. Mphamvu yodziwika bwino ya bawuti imafika 1000MPa;
b. Mphamvu yotulutsa mwadzina ya bawuti imafika 1000 × 0.9 = 900MPa.

4. Kusiyana pakati pa mabawuti wamba akunja akunja ndi ma bawuti akunja amphamvu kwambiri
Maboti wamba a hexagonal amatha kugwiritsidwanso ntchito, koma ma bolts amphamvu kwambiri sangathe kugwiritsidwanso ntchito.
Maboti amphamvu kwambiri nthawi zambiri amapangidwa ndi chitsulo champhamvu kwambiri No. Kwa mitundu ya mikangano, gwiritsani ntchito wrench ya torque kuti mugwiritse ntchito prestress yomwe yatchulidwa, ndi mitundu yolimbana ndi zovuta, masulani mutu wa torx. Maboti wamba nthawi zambiri amapangidwa ndi chitsulo wamba (Q235) ndipo amangofunika kumangika.
Maboti wamba amakhala giredi 4.4, giredi 4.8, giredi 5.6 ndi giredi 8.8. Mabawuti amphamvu kwambiri amakhala giredi 8.8 ndi giredi 10.9, ndipo giredi 10.9 ndiwo amafala kwambiri.
Mabowo a ma bolts wamba sakhala okulirapo kuposa ma bolt amphamvu kwambiri. Ndipotu mabowo wamba amakhala ochepa.