Iyo yekukiya nzira ye nzungu iyi seti yemazino matatu ekuchengeta.Iko kupindira pakati pemazino ekukiya uye tambo dzemating bolt inodzivirira kusunungura panguva yekudengenyeka.Iyo yese simbi yekuvaka iri nani kune yakakwirira tembiricha yekumisikidza uko nylon-insert yekuvhara nati inogona kutadza.Iyo isina-serrated flange pasi pe nut inoshanda seyakavakirwa-mukati washer kugovera zvakaenzana kudzvanywa pamusoro penzvimbo yakakura kurwisa nzvimbo yekutsanya.Stainless flange nzungu dzinowanzo shandiswa munzvimbo dzakanyorova dzekudzivirira ngura, dzinozivikanwa munzvimbo dzakasiyana siyana dzemaindasitiri: mota, kurima, kugadzira chikafu, simba rakachena, nezvimwe.