Heavy Hex Bolts Size Chart
Below chart shows standard available sizes for imperial and metric heavy hex
bolts across ASME, DIN,
EN, ISO, BS and UNI dimension standards.
| Imperial Heavy Hex Bolt Sizes |
Metric Heavy Hex Bolt Sizes |
| 3/8" |
0.3750 |
M12 |
| 1/2" |
0.5000 |
M16 |
| 5/8" |
0.6250 |
M20 |
| 3/4" |
0.7500 |
M22 |
| 7/8" |
0.8750 |
M24 |
| 1" |
1.0000 |
M27 |
| 1-1/8" |
1.1250 |
M30 |
| 1-1/4" |
1.2500 |
M36 |
| 1-3/8" |
1.3750 |
-- |
| 1-1/2" |
1.5000 |
-- |
| 1-5/8" |
1.6250 |
-- |
| 1-3/4" |
1.7500 |
-- |
| 1-7/8" |
1.8750 |
-- |
| 2" |
2.0000 |
-- |
| 2-1/4" |
2.2500 |
-- |
| 2-1/2" |
2.5000 |
-- |
| 2-3/4" |
2.7500 |
-- |
| 3" |
3.0000 |
-- |
| Standard Wise Size Range for Heavy Hex Bolts
|
| ASME B18.2.1 |
3/8 inch to 3 inch |
| BS 1769 |
½ inch to 2 inch |
| ASME B18.2.3.6M |
M12 to M36 |
| ASME B18.2.3.7M |
M16 to M36 |
| DIN 6914 |
M12 to M36 |
| ISO 7412 |
M12 to M36 |
| UNI 5712 |
M12 to M36 |
| DIN-EN 14399-4 |
M12 to M36 |