1. I-self-drilling screws inamagama ahlukeneyo.Zihlala zibizwa ngokuba zizikrufu zentsimbi, izikrufu zentsimbi, izikrufu zokucofa, okanye izikrufu zetapper.
2. Iingcebiso zazo zinemilo eyahlukeneyo: umsila wokubhobhoza, otsolo (onjengepensile), obuthuntu, okanye osicaba, yaye achazwa njengokwenza imisonto, ukusika intambo, okanye ukuqengqeleka kwemisonto.Ukuba i-screw ibonakaliswe, iya kuba yintambo - ukucofa kunye nokudala imicu kumngxuma owenziwe ngaphambili.Ukuba incam ithe tyaba, iyaqengqeleka - iqengqeleka okanye ikhuphe iintambo kwaye idale i-zero clearance phakathi kwesikrufu kunye nezinto eziphathekayo.
3. Le pan yokugcwalisa i-pan yokukhanda izikrufu ze-self-drilling isetyenziselwa ukubopha intsimbi yokulinganisa ukukhanya.Yaye inokuthenjwa ukuba isetyenziswe kakuhle.
4. Amaxabiso aphantsi xa kuthelekiswa nezinye iindlela zokujoyina.
5. Ukuqhawulwa ngokulula.
6. Ayifuni imisonto esele ibunjiwe.
7. Impembelelo entle kunye nokumelana nokungcangcazela.
8. Akukho xesha lokunyanga okanye ixesha lokumisa ukufumana amandla apheleleyo.
9. Akukho sixhobo sikhethekileyo esifunekayo.