Sehlopha sa 12.9 ISO7379 allen hlooho ea lehetla screw

Tšebeliso ea mantlha: plug screws (ISO7379) li boetse li bitsoaallen hlooho lehetla screw. Li-plug screws li sebelisoa hammoho le liboutu le lithupa tsa thae, 'me li sebelisoa haholo-holo e le li-fittings tsa hlobo bakeng sa ho laola sekhahla sa ho bula hlobo pakeng tsa poleiti ea litulo tsa hlobo, li-runner pusher plate le mold template ka har'a hlobo ea lipoleiti tse tharo. Hobane e ka beoa sebakeng se arohaneng sa hlobo, e ka etsa hore moralo oa hlobo o be nyane. Lihlahisoa tsena li na le boima bo phahameng, boima bo botle, ho hanyetsa ho roala le ho hanyetsa mocheso, tse loketseng liforomo tse nepahetseng, tse ka ntlafatsang haholo bophelo ba bona ba tšebeletso, haholo-holo ho senyeha ha mocheso oa liforomo tse nepahetseng ho 'nile ha laoloa ka katleho, ho loketse liforomo libakeng tse phahameng tsa mocheso.