H13 Flange Bolting
H13 Tool Steel is a versatile, chromium-molybdenum alloy. Its characteristics include high toughness, resistance to thermal fatigue cracking, hardenability, and wear resistance. Help eliminate flange leakage with BelleFlex® flange bolting. Leaks occur by bolt stretch, gasket creep, cycles of thermal change, etc. However, by maintaining load on bolted joints, leakage is greatly reduced, if not eliminated.
The load values listed in the table below are according to the calculated theoretical load curve based on the dimensions and material for each part number.
| Part Number | Bolt Size | OD in | ID in | Thick in | Dish in | Height in | Flat Load lb | Torque * ft-lb |
|---|---|---|---|---|---|---|---|---|
| FB1-30-H13 | 1/2" | 1.012 | 0.53 | 0.12 | 0.013 | 0.133 | 4360 | 30 |
| FB1-45-H13 | 1/2" | 1.012 | 0.53 | 0.14 | 0.012 | 0.152 | 6391 | 45 |
| FB1-60-H13 | 1/2" | 1.012 | 0.53 | 0.159 | 0.011 | 0.17 | 8582 | 60 |
| FB2-30-H13 | 5/8" | 1.148 | 0.641 | 0.146 | 0.014 | 0.16 | 6895 | 60 |
| FB2-45-H13 | 5/8" | 1.148 | 0.641 | 0.171 | 0.013 | 0.184 | 10286 | 90 |
| FB2-60-H13 | 5/8" | 1.148 | 0.641 | 0.193 | 0.012 | 0.205 | 13652 | 120 |
| FB3-30-H13 | 3/4" | 1.369 | 0.761 | 0.179 | 0.016 | 0.195 | 10174 | 100 |
| FB3-45-H13 | 3/4" | 1.369 | 0.761 | 0.214 | 0.014 | 0.228 | 15212 | 150 |
| FB3-60-H13 | 3/4" | 1.369 | 0.761 | 0.241 | 0.013 | 0.254 | 20175 | 200 |
| FB4-30-H13 | 7/8" | 1.588 | 0.892 | 0.207 | 0.019 | 0.226 | 14008 | 160 |
| FB4-45-H13 | 7/8" | 1.588 | 0.892 | 0.246 | 0.017 | 0.263 | 21036 | 240 |
| FB4-60-H13 | 7/8" | 1.588 | 0.892 | 0.282 | 0.015 | 0.297 | 27960 | 320 |
| FB5-30-H13 | 1" | 1.808 | 1.021 | 0.228 | 0.024 | 0.252 | 18323 | 245 |
| FB5-45-H13 | 1" | 1.808 | 1.021 | 0.277 | 0.02 | 0.297 | 27381 | 368 |
| FB5-60-H13 | 1" | 1.808 | 1.021 | 0.328 | 0.016 | 0.344 | 36369 | 490 |
| FB6-30-H13 | 1-1/8" | 2.023 | 1.146 | 0.264 | 0.025 | 0.289 | 23731 | 355 |
| FB6-45-H13 | 1-1/8" | 2.023 | 1.146 | 0.321 | 0.021 | 0.342 | 35835 | 533 |
| FB6-60-H13 | 1-1/8" | 2.023 | 1.146 | 0.379 | 0.017 | 0.396 | 47746 | 710 |
| FB7-30-H13 | 1-1/4" | 2.308 | 1.272 | 0.296 | 0.03 | 0.326 | 30139 | 500 |
| FB7-45-H13 | 1-1/4" | 2.308 | 1.272 | 0.36 | 0.025 | 0.385 | 45184 | 750 |
| FB7-60-H13 | 1-1/4" | 2.308 | 1.272 | 0.413 | 0.022 | 0.435 | 60036 | 1000 |
| FB8-30-H13 | 1-3/8" | 2.468 | 1.401 | 0.333 | 0.029 | 0.362 | 37187 | 680 |
| FB8-45-H13 | 1-3/8" | 2.468 | 1.401 | 0.395 | 0.026 | 0.421 | 55645 | 1020 |
| FB8-60-H13 | 1-3/8" | 2.468 | 1.401 | 0.453 | 0.023 | 0.476 | 74249 | 1360 |
| FB9-30-H13 | 1-1/2" | 2.678 | 1.526 | 0.366 | 0.031 | 0.397 | 44978 | 800 |
| FB9-45-H13 | 1-1/2" | 2.678 | 1.526 | 0.439 | 0.027 | 0.466 | 67601 | 1200 |
| FB9-60-H13 | 1-1/2" | 2.678 | 1.526 | 0.509 | 0.023 | 0.532 | 89758 | 1600 |
| FB10-30-H13 | 1-5/8" | 2.951 | 1.648 | 0.396 | 0.036 | 0.432 | 53546 | 1100 |
| FB10-45-H13 | 1-5/8" | 2.951 | 1.648 | 0.482 | 0.03 | 0.512 | 80464 | 1650 |
| FB10-60-H13 | 1-5/8" | 2.951 | 1.648 | 0.549 | 0.027 | 0.576 | 107009 | 2200 |
| FB11-30-H13 | 1-3/4" | 3.168 | 1.776 | 0.429 | 0.038 | 0.467 | 62555 | 1500 |
| FB11-45-H13 | 1-3/4" | 3.168 | 1.776 | 0.52 | 0.032 | 0.552 | 93814 | 2250 |
| FB11-60-H13 | 1-3/4" | 3.168 | 1.776 | 0.598 | 0.028 | 0.626 | 124844 | 3000 |
| FB12-30-H13 | 1-7/8" | 3.391 | 1.901 | 0.464 | 0.04 | 0.504 | 72717 | 2000 |
| FB12-45-H13 | 1-7/8" | 3.391 | 1.901 | 0.56 | 0.034 | 0.594 | 108658 | 3000 |
| FB12-60-H13 | 1-7/8" | 3.391 | 1.901 | 0.592 | 0.032 | 0.624 | 120819 † | 4000 |
| FB13-30-H13 | 2" | 3.599 | 2.026 | 0.501 | 0.041 | 0.542 | 83587 | 2200 |
| FB13-45-H13 | 2" | 3.599 | 2.026 | 0.593 | 0.037 | 0.63 | 125086 | 3300 |
| FB13-60-H13 | 2" | 3.599 | 2.026 | 0.638 | 0.033 | 0.671 | 138937 † | 4400 |
| FB14-30-H13 | 2-1/4" | 4.039 | 2.282 | 0.557 | 0.048 | 0.605 | 107109 | 3180 |
| FB14-45-H13 | 2-1/4" | 4.039 | 2.282 | 0.677 | 0.04 | 0.717 | 160268 | 4770 |
| FB14-60-H13 | 2-1/4" | 4.039 | 2.282 | 0.734 | 0.035 | 0.769 | 178721 † | 6360 |
| FB15-30-H13 | 2-1/2" | 4.482 | 2.529 | 0.626 | 0.052 | 0.678 | 133617 | 4400 |
| FB15-45-H13 | 2-1/2" | 4.482 | 2.529 | 0.757 | 0.044 | 0.801 | 199929 | 6600 |
| FB15-60-H13 | 2-1/2" | 4.482 | 2.529 | 0.81 | 0.04 | 0.85 | 222665 † | 8800 |
| FB16-30-H13 | 2-3/4" | 4.919 | 2.777 | 0.695 | 0.056 | 0.751 | 163554 | 5920 |
| FB16-45-H13 | 2-3/4" | 4.919 | 2.777 | 0.849 | 0.046 | 0.895 | 244906 | 8880 |
| FB16-60-H13 | 2-3/4" | 4.919 | 2.777 | 0.892 | 0.044 | 0.936 | 271685 † | 11840 |
| FB17-30-H13 | 3" | 5.359 | 3.027 | 0.755 | 0.062 | 0.817 | 195675 | 7720 |
| FB17-45-H13 | 3" | 5.359 | 3.027 | 0.928 | 0.05 | 0.978 | 293033 | 11580 |
| FB17-60-H13 | 3" | 5.359 | 3.027 | 0.996 | 0.045 | 1.041 | 326056 † | 15440 |
| FB18-60-H13 | 3-1/4" | 5.397 | 3.293 | 1.039 | 0.044 | 1.083 | 385062 † | 19990 |
| FB19-60-H13 | 3-1/2" | 6.13 | 3.525 | 1.196 | 0.046 | 1.242 | 448145 † | 25090 |
| FB20-60-H13 | 3-3/4" | 6.665 | 3.818 | 1.275 | 0.052 | 1.327 | 517376 † | 31020 |
| FB21-60-H13 | 4" | 7.13 | 4.05 | 1.5 | 0.058 | 1.558 | 815089 †† | 57950 |
* Torque values for sizes 1-1/8″ and larger are based on the 8-pitch thread series for flanged piping.
† 50,000 psi bolt stress
†† 45,000 psi bolt stress