Metric Round Head Bolts Cup Square Bolts (CARRAIGE BOLTS) DIN 603/ DIN 555 ISO 8677 / 4034
| STANDARD | GRADE | FINISHING | RANGE M*L |
| DIN 604, DIN 555 | Grade 4.8, 8.8, 10.9, 12.9 | Plain | M10 17-20 |
| Black | M12 25-100 | ||
| SABS 1143-1977 | HDG | M16 40-100 | |
| Stainless Steel | M20 40-100 |
