Self-drilling screwsyog ib hom ntsia hlau siv nyob rau hauv ntau yam fastening thiab kho daim ntaub ntawv. Feem ntau ua los ntawm cov hlau tsis muaj steel, tus kheej-drilling screws yog tus cwj pwm los ntawm lawv qhov kev xyaum zoo li tus taw tes. Qhov taw tes no ua rau cov ntsia hlau tho rau hauv cov ntaub ntawv yam tsis tas yuav tsum tau ua ntej drilled pilot qhov, uas ua rau cov txheej txheem fastening zoo dua.
Txawm hais tias lawv yuav suab zoo sib xws thiab muaj zog zoo ib yam hauv lawv lub cev zoo li, tus kheej tapping screws thiab tus kheej-drilling screws yuav tsum tsis txhob tsis meej pem. Ob lo lus feem ntau siv sib hloov, tab sis qhov tseeb, cov no yog ob hom ntawm cov ntsia hlau sib txawv. Lawv qhov sib txawv yog qhov tseem ceeb thaum nws los txog rau kev siv zoo tshaj plaws thiab cov ntawv thov tsim nyog, yog li koj yuav tsum tsis txhob raug ntxias kom siv ib qho ntawm lwm qhov vim qhov no tuaj yeem ua rau muaj kev sib koom ua ke ntawm cov ntaub ntawv tsis muaj zog.
Self-tapping screws kais lawv tus kheej threads tab sis tsis tuaj yeem xyaum los ntawm cov ntaub ntawv zoo li ib daim ntawv hlau. Hauv qhov no, tus kheej tapping screws yuav xav tau lub qhov pilot. Txawm li cas los xij, tus kheej-drilling screws feature ib tug taw tes laum me ntsis ntawm cov ntsia hlau, negating qhov yuav tsum tau rau ib tug pilot qhov raws li cov ntsia hlau yuav txiav nws tus kheej xov rau hauv cov khoom. Cov ntsia hlau no muaj ntau yam zoo li lawv tuaj yeem siv tau, zoo ib yam li tus kheej tapping screws. Qhov no ua rau tus kheej-drilling screws hloov tau yooj yim thiab zoo tagnrho rau kev ua haujlwm nrog ntau yam khoom siv hauv ntau qhov chaw thiab kev lag luam.
Self-drilling screws tuaj yeem siv rau ntau yam kev siv uas cuam tshuam nrog ob hom khoom sib txawv ua ke. Lawv feem ntau siv los khi hlau rau ntoo, lossis txawm tias hlau rau hlau.
