Specials & accessories
12-point flange bolts – 12-point flange bolts, inch
Dimensions to IFI 115 · threads UNC / UNF to ASME B1.1. Dimensions from the HBS technical datasheet – in stock, with EN 10204 3.1 / 3.2 certificates.
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Dimensions
12-point flange bolts dimension table.
Dimensions in inches
| Nominal size | Body dia. E | Flange dia. B | Across flats F | Across corners G | Head height H | Wrench height K | Flange U | Thread length LT | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| max. | min. | max. | min. | max. | min. | min. | max. | min. | min. | min. | |
| 1/4" | 0.25 | 0.2435 | 0.375 | 0.365 | 0.252 | 0.244 | 0.278 | 0.26 | 0.15 | 0.058 | 1 |
| 5/16" | 0.3125 | 0.3053 | 0.469 | 0.457 | 0.315 | 0.306 | 0.348 | 0.312 | 0.18 | 0.074 | 1.125 |
| 3/8" | 0.375 | 0.3678 | 0.562 | 0.55 | 0.377 | 0.368 | 0.42 | 0.375 | 0.21 | 0.095 | 1.25 |
| 7/16" | 0.4375 | 0.4294 | 0.656 | 0.642 | 0.438 | 0.429 | 0.489 | 0.438 | 0.26 | 0.109 | 1.375 |
| 1/2" | 0.5 | 0.4919 | 0.75 | 0.735 | 0.502 | 0.493 | 0.562 | 0.5 | 0.29 | 0.129 | 1.5 |
| 5/8" | 0.625 | 0.6163 | 0.938 | 0.921 | 0.627 | 0.618 | 0.705 | 0.625 | 0.36 | 0.166 | 1.75 |
| 3/4" | 0.75 | 0.7406 | 1.125 | 1.107 | 0.752 | 0.743 | 0.847 | 0.75 | 0.44 | 0.2 | 2 |
| 7/8" | 0.875 | 0.8647 | 1.312 | 1.293 | 0.875 | 0.866 | 0.987 | 0.875 | 0.51 | 0.234 | 2.25 |
| 1" | 1 | 0.9886 | 1.5 | 1.479 | 1.003 | 0.991 | 1.130 | 1 | 0.6 | 0.268 | 2.5 |
| 1-1/8" | 1.125 | 1.109 | 1.688 | 1.665 | 1.125 | 1.115 | 1.271 | 1.125 | 0.66 | 0.31 | 2.750 |
| 1-1/4" | 1.25 | 1.2336 | 1.875 | 1.852 | 1.253 | 1.24 | 1.414 | 1.25 | 0.73 | 0.35 | 3.000 |
| 1-1/2" | 1.5 | 1.482 | 2.25 | 2.224 | 1.503 | 1.489 | 1.697 | 1.5 | 0.87 | 0.433 | 3.500 |
- E
- Body diameter
- B
- Flange diameter
- F
- Width across flats
- G
- Width across corners
- H
- Head height
- K
- Wrench height
- U
- Flange thickness
- LT
- Thread length
See hbsfasteners.nl/products/engineered.
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