Mur keling baja tahan karat (countersunk / flat head); Paku tarik countersunk / flat head; Mur / baut segi genep) — sabaraha nomer standar nasionalna?

Soket heksagon sirah countersunk: GB70.3 DIN7991

Paku tarik sirah buleud kabuka: GB12618

Kacang segi genep: GB6170 DIN934

Baut ulir pinuh segi genep éksternal: GB5783 DIN933

Mur paku keling: GB17880.1