| Nominal Size | Screw | Dimension (mm) | 304 Inventory |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| B (inch) | A (mm) | d1 | L | A | B | E | D | d | Hezagon S | Octagon S | |
| 1/4B | 8A | R 1/4 | 39 | 20 | 7 | 4 | 8 | 5 | 14 | － | ● |
| 3/8B | 10A | R 3/8 | 45 | 25 | 7 | 5 | 10.5 | 17 | － | ● | |
| 1/2B | 15A | R 1/2 | 51 | 30 | 5 | 6 | 14 | 9 | 22 | － | ● |
| 3/4B | 20A | R 3/4 | 64 | 40 | 6 | 8 | 20 | 14 | － | 27.5 | ● |
| 1B | 25A | R 1 | 72 | 45 | 7 | 9 | 26.5 | 20 | － | 34.5 | ● |
| 11/4B | 32A | R 11/4 | 80 | 50 | 8 | 10 | 34 | 27 | － | 43.5 | ● |
| 11/2B | 40A | R 11/2 | 87 | 55 | 9 | 11 | 40.5 | 32.50 | － | 49.5 | ● |
| 2B | 50A | R 2 | 95.5 | 60 | 10 | 12 | 52.5 | 44 | － | 61.5 | ● |