Metric Fastener Series Belleville Washers (DIN 6796)
Bolted joints will work loose due to a loss of preload. This can be caused by permanent set in any part of the assembly. Belleville washers will counteract this loosening by increasing the axial compliance of the joint.
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.
Metric Fasteners - Imperial Dimensions
| Part Number | OD in | ID in | THICK in | DISH in | HEIGHT in | Load 100% lb |
|---|---|---|---|---|---|---|
| 6796-2 | 0.197 | 0.087 | 0.016 | 0.008 | 0.024 | 142 |
| 6796-2.5 | 0.236 | 0.106 | 0.02 | 0.009 | 0.028 | 214 |
| 6796-3 | 0.276 | 0.126 | 0.024 | 0.01 | 0.033 | 310 |
| 6796-3.5 | 0.315 | 0.146 | 0.031 | 0.01 | 0.042 | 588 |
| 6796-4 | 0.354 | 0.169 | 0.039 | 0.012 | 0.051 | 1064 |
| 6796-5 | 0.433 | 0.209 | 0.047 | 0.014 | 0.061 | 1442 |
| 6796-6 | 0.551 | 0.252 | 0.059 | 0.02 | 0.079 | 2423 |
| 6796-7 | 0.669 | 0.291 | 0.069 | 0.022 | 0.091 | 2815 |
| 6796-8 | 0.709 | 0.331 | 0.079 | 0.024 | 0.102 | 4208 |
| 6796-10 | 0.906 | 0.413 | 0.098 | 0.028 | 0.126 | 5815 |
| 6796-12 | 1.142 | 0.512 | 0.118 | 0.037 | 0.156 | 8513 |
| 6796-14 | 1.378 | 0.591 | 0.138 | 0.045 | 0.183 | 11046 |
| 6796-16 | 1.535 | 0.669 | 0.157 | 0.049 | 0.207 | 14522 |
| 6796-18 | 1.654 | 0.748 | 0.177 | 0.051 | 0.228 | 18814 |
| 6796-20 | 1.772 | 0.827 | 0.197 | 0.055 | 0.252 | 24544 |
| 6796-22 | 1.929 | 0.906 | 0.217 | 0.061 | 0.278 | 30588 |
| 6796-24 | 2.205 | 0.984 | 0.236 | 0.069 | 0.305 | 33587 |
| 6796-27 | 2.362 | 1.102 | 0.256 | 0.073 | 0.329 | 40082 |
| 6796-30 | 2.756 | 1.22 | 0.276 | 0.087 | 0.362 | 42776 |
lo(max) = height as delivered
lo(min) = height after initial flattening
Metric Fasteners - Metric Dimensions
| Part Number | OD mm | ID mm | THICK mm | DISH mm | HEIGHT (max) mm | Height (min) mm | Load 100% N |
|---|---|---|---|---|---|---|---|
| 6796-2 | 5 | 2.2 | 0.4 | 0.2 | 0.6 | 0.5 | 628 |
| 6796-2.5 | 6 | 2.7 | 0.5 | 0.22 | 0.72 | 0.61 | 946 |
| 6796-3 | 7 | 3.2 | 0.6 | 0.25 | 0.85 | 0.72 | 1374 |
| 6796-3.5 | 8 | 3.7 | 0.8 | 0.26 | 1.06 | 0.92 | 2606 |
| 6796-4 | 9 | 4.3 | 1 | 0.3 | 1.3 | 1.12 | 4713 |
| 6796-5 | 11 | 5.3 | 1.2 | 0.35 | 1.55 | 1.35 | 6388 |
| 6796-6 | 14 | 6.4 | 1.5 | 0.5 | 2 | 1.7 | 10733 |
| 6796-7 | 17 | 7.4 | 1.75 | 0.55 | 2.3 | 2 | 12469 |
| 6796-8 | 18 | 8.4 | 2 | 0.6 | 2.6 | 2.24 | 18640 |
| 6796-10 | 23 | 10.5 | 2.5 | 0.7 | 3.2 | 2.8 | 25761 |
| 6796-12 | 29 | 13 | 3 | 0.95 | 3.95 | 3.43 | 37712 |
| 6796-14 | 35 | 15 | 3.5 | 1.15 | 4.65 | 4.04 | 48935 |
| 6796-16 | 39 | 17 | 4 | 1.25 | 5.25 | 4.58 | 64336 |
| 6796-18 | 42 | 19 | 4.5 | 1.3 | 5.8 | 5.08 | 83349 |
| 6796-20 | 45 | 21 | 5 | 1.4 | 6.4 | 5.6 | 108735 |
| 6796-22 | 49 | 23 | 5.5 | 1.55 | 7.05 | 6.15 | 135507 |
| 6796-24 | 56 | 25 | 6 | 1.75 | 7.75 | 6.77 | 148793 |
| 6796-27 | 60 | 28 | 6.5 | 1.85 | 8.35 | 7.3 | 177568 |
| 6796-30 | 70 | 31 | 7 | 2.2 | 9.2 | 8 | 189502 |
lo(max) = height as delivered
lo(min) = height after initial flattening