Stainless steel (countersunk / sirah datar) kacang rivet;Countersunk sirah / sirah datar narik paku;Hexagon nut / bolt) — naon nomer standar nasional?

Countersunk sirah sagi genep stop kontak: GB70.3 DIN7991

Buka sirah babak narik kuku: GB12618

Nut sagi genep: GB6170 DIN934

héksagonal éksternal baud thread pinuh: GB5783 DIN933

kacangan rivet: GB17880.1