Siruuru yehuni ipuranga rakagadzirwa nemusoro, shank nemuviri une thread.Sezvo iyo screw yese isina shinda, zvakajairika kudaidza aya screws partially threaded (PT).Head.Musoro we screw ndiyo chikamu chine drive uye inoonekwa sepamusoro pe screw.Misoro yakawanda yehuni ndeye Misoro yakatsetseka.