1. Izikrweqe kwinto eyaziwa ngokuba ngamazinyo egama elikhulu lomsonto; izikrufu ezineentambo kwicala lesikrufu; ukusetyenziswa kwe-screwdrivers okanye i-wrenches ukuguqula i-screws ukuqinisa okanye ukukhulula intloko enkulu kwi-screws (i-screws) intloko; zokusetyenziswa ngokudibeneyo nezikrufu zomatshini, umbindi womngxuma onemisonto, ezikrwelwe kwizikrufu ngasempuma zibizwe ngokuba sisikrufu somatshini (i-nut). Ukusetyenziswa kwezikrufu zokhuni (ezisetyenziswa ngokubanzi kwi-woodworking, umgama wentambo ubanzi, kunye ne-pointed), i-self-tapping screws (ininzi esetyenziselwa ukudibanisa umthi, iplastiki okanye i-sheet sheet, njl.) ayifuni ukusebenzisa i-nut.
2. Izikrweqe kwinto eyaziwa ngokuba ngamazinyo egama elikhulu lomsonto; izikrufu ezineentambo kwicala lesikrufu; ukusetyenziswa kwe-screwdrivers okanye i-wrenches ukuguqula i-screws ukuqinisa okanye ukukhulula intloko enkulu kwi-screws (i-screws) intloko; zokusetyenziswa kunye nezikrufu zomatshini.