Flat-head rivet nuts dzine cylindrical part yakatsetseka kana kuti yakatwasuka. Nzungu dzema rivet dzinowanzo shandiswa panguva yekugadzira nekuti mitsetse yadzo yakamira inodzivirira-kutsvedza. The flat-head rivet nut's head inobuditsa nemusheet metal panguva yekurivhesa. Flat-head rivet nuts ndiwo zvakare anonyanya kushandiswa uye akasimba emhando yerivet nut.
Countersunk musoro rivet nzungu zvakare ine ingave yakatsetseka kana yakatwasuka grooved kupera. Vanokwizirwa kuita mashizha matete ane chamfers. Mushure mekuisa, musoro wepamusoro unofanana nepamusoro pesimbi yesimbi. Zvinhu zviripo zvinosanganisira galvanized iron, 304 Stainless steel, uye 316 Stainless steel.
Madiki countersunk head rivet nzungu anowanikwa mune galvanized iron, 304 Stainless simbi, uye 316 Stainless simbi. Sezvinoratidzwa nezita racho, madiki madiki emumusoro rivet nzungu ane musoro mudiki dhayamita uye ukobvu pane countersunk musoro rivet nzungu. Kana sheet simbi iri mutete uye chamfer idiki kana isipo, diki countersunk musoro rivet nati ndiyo yega sarudzo.