Fasteners nau'in sassa ne na injina da ake amfani da su don haɗa haɗin gwiwa. Yawanci ya haɗa da nau'ikan guda goma sha biyu: kusoshi, kusoshi, screws, goro, screws na taɓa kai, screws na katako, wanki, zoben riƙewa, fil, rivets, majalisai da haɗa nau'i-nau'i, da kusoshi na walda. Ana amfani da fasteners sosai i...
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