1. Self-drilling screws muaj ntau lub npe.Lawv feem ntau hu ua hlau ntsia hlau, ntawv hlau ntsia hlau, tapping screws, los yog tapper screws.
2. Lawv cov lus qhia tuaj yeem sib txawv: laum tus Tsov tus tw, taw tes (xws li xaum), blunt, lossis tiaj tus, thiab lawv tau piav qhia tias yog xov-txheej, xov-txiav, lossis xov dov.Yog hais tias tus ntsia hlau yog taw tes, nws yuav yog xov-txiav - tapping thiab tsim threads nyob rau hauv ib tug pre-drilled qhov.Yog hais tias lub hau yog tiaj, nws yog xov-dov - dov los yog extruding threads thiab tsim xoom clearance ntawm cov ntsia hlau thiab cov khoom.
3. Qhov no fillister pan framing taub hau nws tus kheej drilling screws yog siv rau fastening lub teeb gauge hlau.Thiab nws yog txhim khu kev qha yog siv kom raug.
4. Lawv pheej yig piv rau lwm txoj kev koom nrog.
5. Yooj yim disassembled.
6. Nws tsis xav tau pre-moulded threads.
7. Kev cuam tshuam zoo thiab kev co kuj.
8. Tsis muaj sijhawm kho lossis kho lub sijhawm kom ua tiav lub zog tag nrho.
9. Tsis tas yuav tsum muaj cov cuab yeej tshwj xeeb.