Class A/B/C/D
ASTM A453 Grade 660 Bolts Class A, B, C & D offered at TorqBolt are manufactured in accordance with ISO 4014, ISO 4017, ASME B18.2.3M, ASME B18.2.1, ASME B18.3.2, ASME B 18.3.1M standards in metric and imperial coarse and fine thread sizes with UNC, UN, UNF, UNEF, UNJF & ISO threads.
| Bolts | DIN | ISO | BS | ASME | IS | |
|---|---|---|---|---|---|---|
| Metric | Imperial | |||||
| Hex Bolts | 931 | 4014 / 4016 / 4017 / 8765 | 1083 / 3692 | B18.2.3.10M / B18.2.3.5M | B18.2.1 | 12427 / 1363 PART 1 / 1363 PART 2 / 1364 / 6639 |
| Heavy Hex Bolts | 6914 | - | - | B18.2.3.6M / B18.2.3.7M / B18.2.6M | B18.2.1 | - |
| Square Bolts | 478 / 608 | - | - | - | B18.2.1 | - |
| Square Neck Bolts | - | 8677 | - | B18.5.2.2M | B18.5 | - |
| Round Head Square Neck Bolts | - | - | - | B18.5.2.1M / B18.5.2.3M | B18.5 / B18.5 | - |
| Round Head Fin Neck Bolts | - | - | - | - | B18.5 | - |
| Round Head Ribbed Neck Bolts | - | - | - | - | B18.5 | - |
| Hex Flange Bolts | 6921 / 6921 | 15071 / 4162 / 8100 / 8102 | - | - | - | 15582 |
| Carriage Bolts | 603 / 607 | - | - | - | - | - |
| U Bolts | 3570 | - | - | - | - | - |
| T Bolts | - | - | - | B5.1M | B18.5 | - |
| Socket Head Bolts | 912 | 4762 | - | - | B18.3 | - |
| Plough Bolts | 11014 | - | - | - | - | - |
| Flat Nib Bolts | 604 | - | - | - | - | - |
| Track Bolts | - | - | - | - | B18.10 | - |
| Askew Head Bolts | - | - | - | - | B18.2.1 | - |
| Slotted Bolts | - | - | - | - | B18.5 | - |
| Step Bolts | - | - | - | - | B18.5 | - |
