Hauv kev tsim khoom lag luam, fasteners yog cov khoom tseem ceeb rau kev sib txuas thiab kho qhov chaw. Lawv muaj ntau hom thiab muaj cov haujlwm sib txawv. Los ntawm bolts, ceev, screws, mus rau rivets, washers, tuav rings, pins, thiab lwm yam., txhua fastener plays ib tug indispensable luag hauj lwm. Txawm li cas los xij, nyob rau hauv lub ntsej muag ntawm ntau yam kev xaiv, nws yog ib qho tseem ceeb tshwj xeeb los xyuas kom meej tias cov fasteners xaiv tuaj yeem ua tau raws li qhov xav tau ntawm kev ua haujlwm tshwj xeeb.