Nails na self-drilling, wanda aka fi sani da fasteners na SDA, sun wakilci wani sulhu na musamman na ƙarfin ƙasa a cikin nailing na ƙasa. Waɗannan elements na steel na thread suna aiki azaman tsarin gudanarwa da kuma tsarin anchoring, haɗe da tsarin ƙarfin ƙarfi tare da ikon yanke ko grinding a ƙarshen. Duk da nails na al'ada waɗanda ke buƙatar buɗe-buɗen buɗe, nails na self-drilling sun soke buƙatar kayan aikin gudanarwa na wucin gadi, suna saurin lokacin shigarwa a cikin yanayin ƙasa mara daɗi. Nomenclature na SDA ya nuna nails waɗanda aka tsara su tare da helical ko fluted patterns waɗanda ke ci gaba a cikin ƙasa yayin da suke kirkirar ƙarfin ƙarfi da ƙarfin ƙarfi. Wannan aikin na musamman ya sa nails na self-drilling su zama na musamman a cikin ayyukan inda ƙarfin ƙasa ya kasance mara ƙarfi, ko ta hanyar hakar ƙasa, ko hatsarin gefe, ko kuma ayyukan gini na ƙasa. Fasahar self-drilling ɗin ta ƙunshi ƙarfin ƙarfi na ƙarfi fiye da hanyoyin shigarwa na al'ada, saboda haɗin gwiwa na mechanic tsakanin geometry na nail da tsarin ƙasa an kirkiri shi a lokaci guda tare da gudanarwa.
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