--------- U Type Bolt --------

Ma bolts a U, omwe amadziwikanso kuti U-bolts, ndi mtundu wa zida zomangira zomwe zimagwiritsidwa ntchito pomanga ndi zomangamanga. Amatchulidwa motero chifukwa cha kapangidwe kake kooneka ngati U, kokhala ndi mikono iwiri ya ulusi yomwe imachoka pamalo opindika.

U-bolts amagwiritsidwa ntchito makamaka kuteteza ndi kumangiriza mitundu yosiyanasiyana ya zida kapena zomanga palimodzi. Ndiwothandiza makamaka pakugwiritsa ntchito komwe kukufunika kukhazikika mwamphamvu komanso kodalirika, monga kutsekera mapaipi, mizati, kapena matabwa kumakoma, pansi, kapena malo ena. U-bolts amagwiritsidwa ntchito kwambiri m'mafakitale monga magalimoto, zam'madzi, ndi mapaipi.

Mapangidwe opangidwa ndi U a ma bolts awa amalola kukhazikitsa ndi kuchotsa mosavuta. Nthawi zambiri amamangidwa pogwiritsa ntchito mtedza pa mkono uliwonse wopangidwa ndi ulusi, zomwe zimapangitsa kuti azitha kugwira bwino zomwe zikuphatikizidwa. Ma U-bolts amapezeka mumitundu yosiyanasiyana, zida, komanso zomaliza kuti zigwirizane ndi zofunikira zosiyanasiyana.

Ma U-bolts amadziwika chifukwa cha kulimba kwawo komanso mphamvu zawo, zomwe zimawapangitsa kukhala oyenera ntchito zolemetsa. Amatha kupirira kupsinjika kwakukulu ndikupereka kulumikizana kokhazikika komanso kotetezeka. Kuphatikiza apo, mapangidwe awo amalola kusinthasintha, kuwapangitsa kukhala oyenera kugwiritsidwa ntchito m'malo omwe kugwedezeka kapena kusuntha kumatha kuchitika.