Flange Bolting Washers
Torqbolt Flange Washer are design relative to most Belleville spring designs is that the OD/ID ratio is small to fit standard flanges.
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Torqbolt Flange Washer prevent bolt tension loss due to :
- Differential Thermal Expansion
- High Temperature Bolt Creep
- Packing and Gasket Relaxation
- Vibration.
H13 Tool Steel is the main material for this product group, with a working temperature to 1000°F. Materials, such as 17-7 PH Stainless Steel and INCONEL 718 and X-750 Alloys, are also available. H13 flange bolting is available at 30,000, 4000, and 60,000 psi bolt stress.
| Bolt Size | Dimensions in MM | WS.NO. | SAP CODES | ||||
|---|---|---|---|---|---|---|---|
| Outer Dia. (De) | Inner Dia. (Di) | Thickness (t) | Height (lo) | Cone Height (ho) | |||
| 1/2" | 25.7 | 13.46 | 3.05 | 3.38 | 0.33 | 9500 | FB25.7X13.46X3.05H13 |
| 25.7 | 13.46 | 3.56 | 3.86 | 0.3 | 9501 | FB25.7X13.46X3.56H13 | |
| 25.7 | 13.46 | 3.81 | 4.32 | 0.28 | 3997 | FB25.7X13.46X3.81H13 | |
| 5/8" | 29.16 | 16.28 | 3.71 | 4.06 | 0.36 | 9502 | FB29.16X16.28X3.7H13 |
| 29.16 | 16.28 | 4.34 | 4.67 | 0.33 | 9503 | FB29.16X16.28X4.3H13 | |
| 29.16 | 16.28 | 4.9 | 5.21 | 0.3 | 3998 | FB29.16X16.28X4.9H13 | |
| 3/4" | 34.77 | 19.33 | 4.55 | 4.95 | 0.41 | 9504 | FB34.77X19.33X4.5H13 |
| 34.77 | 19.33 | 5.44 | 5.79 | 0.36 | 9505 | FB34.77X19.33X5.4H13 | |
| 34.77 | 19.33 | 6.12 | 6.45 | 0.33 | 3999 | FB34.77X19.33X6.1H13 | |
| 7/8" | 40.34 | 22.66 | 5.26 | 5.74 | 0.48 | 9506 | FB40.34X22.66X5.2H13 |
| 40.34 | 22.66 | 6.25 | 6.68 | 0.43 | 9507 | FB40.34X22.66X6.2H13 | |
| 40.34 | 22.66 | 7.16 | 7.54 | 0.38 | 4000 | FB40.34X22.66X7.1H13 | |
| 1" | 45.92 | 25.93 | 5.79 | 6.4 | 0.61 | 9508 | FB45.92X25.93X5.7H13 |
| 45.92 | 25.93 | 7.04 | 7.54 | 0.51 | 9509 | FB45.92X25.93X7H13 | |
| 45.92 | 25.93 | 8.33 | 8.74 | 0.41 | 4002 | FB45.92X25.93X8.3H13 | |
| 1-1/8" | 51.38 | 29.11 | 6.71 | 7.34 | 0.64 | 9510 | FB51.38X29.11X6.7H13 |
| 51.38 | 29.11 | 8.15 | 8.69 | 0.53 | 9511 | FB51.38X29.11X8.1H13 | |
| 51.38 | 29.11 | 9.63 | 10.06 | 0.43 | 4003 | FB51.38X29.11X9.6H13 | |
| 1-1/4" | 58.62 | 32.31 | 7.52 | 8.28 | 0.76 | 9512 | FB58.62X32.31X7.5H13 |
| 58.62 | 32.31 | 9.14 | 9.78 | 0.64 | 9513 | FB58.62X32.31X9.1H13 | |
| 58.62 | 32.31 | 10.49 | 11.05 | 0.56 | 9580 | FB58.62X32.31X10H13 | |
| 1-3/8" | 62.69 | 35.59 | 8.46 | 9.19 | 0.74 | 9514 | FB62.69X35.59X8.4H13 |
| 62.69 | 35.59 | 10.03 | 10.69 | 0.66 | 9515 | FB62.69X35.59X10H13 | |
| 62.69 | 35.59 | 11.51 | 12.09 | 0.58 | 4005 | FB62.69X35.59X11H13 | |
| 1-1/2" | 68.02 | 38.76 | 9.3 | 10.08 | 0.79 | 9525 | FB68.02X38.76X9.3H13 |
| 68.02 | 38.76 | 11.15 | 11.84 | 0.69 | 9526 | FB68.02X38.76X11H13 | |
| 68.02 | 38.76 | 12.93 | 13.51 | 0.58 | 4006 | FB68.02X38.76X12H13 | |
| 1-5/8" | 74.96 | 41.86 | 10.06 | 10.97 | 0.91 | 9527 | FB74.96X41.86X10H13 |
| 74.96 | 41.86 | 12.24 | 13 | 0.76 | 9528 | FB74.96X41.86X12H13 | |
| 74.96 | 41.86 | 13.94 | 14.63 | 0.69 | 9581 | FB74.96X41.86X13H13 | |
| 1-3/4" | 80.47 | 45.11 | 10.9 | 11.86 | 0.97 | 9529 | FB80.47X45.11X10H13 |
| 80.47 | 45.11 | 13.21 | 14.02 | 0.81 | 9530 | FB80.47X45.11X13H13 | |
| 80.47 | 45.11 | 15.19 | 15.9 | 0.71 | 9582 | FB80.47X45.11X15H13 | |
| 1-7/8" | 86.13 | 48.29 | 11.79 | 12.8 | 1.02 | 9531 | FB86.13X48.29X11H13 |
| 86.13 | 48.29 | 14.22 | 15.09 | 0.86 | 9532 | FB86.13X48.29X14H13 | |
| 86.13 | 48.29 | 15.04 | 15.85 | 0.81 | 4009 | FB86.13X48.29X15H13 | |
| 2" | 91.41 | 51.46 | 12.73 | 13.77 | 1.04 | 9534 | FB91.41X51.46X12H13 |
| 91.41 | 51.46 | 15.06 | 16 | 0.94 | 9535 | FB91.41X51.46X15H13 | |
| 91.41 | 51.46 | 16.21 | 17.04 | 0.84 | 9583 | FB91.41X51.46X16H13 | |
| 2-1/4" | 102.59 | 57.96 | 14.15 | 15.37 | 1.22 | 9537 | FB102.59X57.96X14H13 |
| 102.59 | 57.96 | 17.2 | 18.21 | 1.02 | 9538 | FB102.59X57.96X17H13 | |
| 102.59 | 57.96 | 18.64 | 19.53 | 0.89 | 4011 | FB102.59X57.9X1813 | |
| 2-1/2" | 113.84 | 64.24 | 15.9 | 17.22 | 1.32 | 9540 | FB113.84X64.24X15H13 |
| 113.84 | 64.24 | 19.23 | 20.35 | 1.12 | 9541 | FB113.84X64.24X19H13 | |
| 113.84 | 64.24 | 20.57 | 21.59 | 1.02 | 4012 | FB113.8X64.24X20H13 | |
| 2-3/4" | 124.94 | 70.54 | 17.65 | 19.08 | 1.42 | 9543 | FB124.94X70.54X17H13 |
| 124.94 | 70.54 | 21.56 | 22.73 | 1.17 | 9544 | FB124.94X70.54X21H13 | |
| 124.94 | 70.54 | 22.66 | 23.77 | 1.12 | 4013 | FB124.9X70.54X22H13 | |
| 3" | 136.12 | 76.89 | 19.18 | 20.75 | 1.57 | 9546 | FB136.12X76.89X19H13 |
| 136.12 | 76.89 | 23.57 | 24.84 | 1.27 | 9547 | FB136.12X76.89X23H13 | |
| 136.12 | 76.89 | 25.3 | 26.44 | 1.14 | 4014 | FB136.1X76.89X25H13 | |
| 3-1/4" | 137.08 | 83.64 | 26.39 | 27.51 | 1.12 | 9549 | FB137.08X83.64X26H13 |
| 3-1/2" | 155.7 | 89.54 | 30.38 | 31.55 | 1.17 | 9550 | FB155.7X89.54X30H13 |
| 3-3/4" | 169.29 | 96.98 | 32.39 | 33.71 | 1.32 | 9551 | FB169.29X96.98X32H13 |
| 4" | 181.1 | 102.87 | 38.1 | 39.57 | 1.47 | 9552 | FB181.1X102.87X38H13 |