Insimbi engagqwali (countersunk / flat head) amantongomane e-rivet;Ikhanda le-Countersunk / ikhanda eliyisicaba lidonsa isipikili;I-Hexagon nut / bolt) — ithini inombolo kazwelonke ejwayelekile?

Isokhethi ye-Countersunk hexagon yekhanda: GB70.3 DIN7991

Vula ikhanda eliyindilinga ukudonsa isipikili: GB12618

I-Hexagon nut: GB6170 DIN934

Ibhawodi yochungechunge olugcwele lwehexagon yangaphandle: GB5783 DIN933

I-Rivet nut: GB17880.1