countersunk nws tus kheej drilling screws thiab drilling tail ntsia hlau tus Tsov tus tw ntawm cov ntsia hlau yog drilling tail los yog taw tes, tsis muaj auxiliary ua tau ncaj qha rau ntawm qhov chaw, cov khoom siv yooj yim drilling, tapping, xauv, tuaj yeem txuag lub sijhawm tsim kho. Piv nrog rau cov ntsia hlau zoo tib yam, nws cov tawv rub lub zog thiab kev txij nkawm siab ua ke tom qab lub sijhawm ntev yuav tsis plam kev siv kev nyab xeeb. Tshwj xeeb tshaj yog nyob rau hauv kev sib xyaw ua ke ntawm kev tsim kho, kev tsim kho, vaj tse thiab lwm qhov chaw, thiab kev ua haujlwm, tus nqi rau kev ntseeg siab ntawm tus kheej tapping nws tus kheej-drilling screws rau qhov zoo tshaj plaws kev lag luam fasteners.
Cim npe nrov: Tuam Tshoj Countersunk Self Drilling Screws lwm tus neeg, Hoobkas