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| Round Head Bolts
| STANDARD | DESCRIPTION | GRADE | DIAMETIER | MARKED | TEST STANDARD |
| DIN 603 | MUSHROOM HEAD SQUARE NECK NECK BOLTS | GR.4.8 | M8~M76 | | DIN 267 1-26 |
| ANSI/ASME B18.5 C 40 | ROUND HEAD SQUARE NECK BOLTS | GR.4.8 | 5/16"~3" | | A563 |
| B.S.W | BLACK MTLD STEEL CARRIAGE BOLTS | GR.4.8 | 5/16"~3" | | B.S 916 |
| AS/NZS 1390:1997 | CUP HEAD BOLTS WITH ISO WETRIC COARSE
PITCH THREADS | GR.4.8 | M8~M76 | | AS/NZS 4291 |
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