Cov qauv tseem ceeb ntawm cov ntsia hlau muaj plaub ntu: lub taub hau, shank, xov, thiab taub. Nws converts rotational motion rau hauv axial quab yuam los ntawm sab nraud helix (xov), ua tiav nws txoj haujlwm fastening.
Lub taub hau: Siv rau zawm lossis loosening. Cov hom muaj xws li lub taub hau puag ncig, lub taub hau countersunk, thiab hex taub hau. Lub taub hau sib txawv yog sib xws nrog cov cuab yeej tsav tsheb sib txawv (xws li, Phillips lub taub hau, lub taub hau slotted, hex socket).
Ncej: Txuas lub taub hau mus rau qhov chaw threaded. Ib txhia yog du (piv txwv li, unthreaded sab sauv ntawm ib tug ntoo ntsia hlau), uas yuav pab kom clamp cov khoom.
Xov: Lub helical protrusions nyob ib ncig ntawm lub shank, lub ntsiab functional qauv ntawm cov ntsia hlau. Raws li cov hniav zoo nkauj, nws tuaj yeem muab faib ua daim duab peb sab, trapezoidal, thiab sawtooth duab, txiav txim siab nws cov load-cov kabmob thiab nws tus kheej- ntsuas kev ua haujlwm.
Tswv yim: Ua kom yooj yim rau cov ntsia hlau ntxig rau hauv cov khoom, tshwj xeeb tshaj yog nyob rau hauv tus kheej -tapping lossis ntoo screws, txo qhov kev pheej hmoo ntawm kev tawg.
Nyob ntawm lawv daim ntawv thov, cov ntsia hlau tuaj yeem muab faib ua peb pawg tseem ceeb: cov ntsia hlau zoo tib yam, tus kheej -tapping screws, thiab expansion screws. Tus kheej-tapping screws tuaj yeem tsim cov xov ntawm lawv tus kheej hauv cov ntaub ntawv mos yam tsis tas yuav tsum tau ua ntej-tapping; thaum expansion screws ua tau siab - lub zog anchoring los ntawm mechanical expansion thiab feem ntau yog siv nyob rau hauv nyuaj substrates xws li pob zeb.
