Features an off-center parabolic ramp that creates a secondary spring system to increase both spring tension and load bearing capability. Provides greater resistance to both loosening and fatigue.
| Hole Size | Inside Diameter Min. | Inside Diameter Max. | Outside Diameter Min. | Outside Diameter Max. | Free Height Min. | Free Height Max. | Thickness | WCL Product Number |
|---|---|---|---|---|---|---|---|---|
| 6 | 0.142 | 0.15 | 0.307 | 0.317 | 0.033 | 0.039 | 0.022 | 3533-06-02 |
| 10 | 0.195 | 0.204 | 0.433 | 0.443 | 0.046 | 0.052 | 0.029 | 3533-10-02 |
| 10 | 0.195 | 0.204 | 0.433 | 0.443 | 0.062 | 0.068 | 0.045 | 3533-10-06 |
| 12 | 0.221 | 0.231 | 0.433 | 0.443 | 0.049 | 0.055 | 0.029 | 3533-12-02 |
| 1/4 | 0.256 | 0.267 | 0.495 | 0.505 | 0.063 | 0.071 | 0.039 | 3533-14-02 |
| 1/4 | 0.256 | 0.267 | 0.74 | 0.76 | 0.073 | 0.083 | 0.039 | 3533-14-03 |
| 1/4 | 0.256 | 0.267 | 0.495 | 0.505 | 0.079 | 0.087 | 0.055 | 3533-14-06 |
| 1/4 | 0.256 | 0.267 | 0.74 | 0.76 | 0.089 | 0.099 | 0.055 | 3533-14-07 |
| 5/16 | 0.32 | 0.332 | 0.615 | 0.635 | 0.072 | 0.08 | 0.043 | 3533-18-02 |
| 5/16 | 0.32 | 0.332 | 0.865 | 0.885 | 0.088 | 0.098 | 0.045 | 3533-18-03 |
| 5/16 | 0.32 | 0.332 | 0.865 | 0.885 | 0.105 | 0.115 | 0.062 | 3533-18-07 |
| 3/8 | 0.384 | 0.398 | 0.74 | 0.76 | 0.086 | 0.094 | 0.05 | 3533-20-02 |
| 3/8 | 0.384 | 0.398 | 0.99 | 1.01 | 0.12 | 0.13 | 0.07 | 3533-20-07 |
| 7/16 | 0.448 | 0.463 | 1.115 | 1.135 | 0.16 | 0.17 | 0.093 | 3533-22-07 |
| 1/2 | 0.515 | 0.525 | 1.24 | 1.26 | 0.19 | 0.2 | 0.109 | 3533-24-07 |
| 1/2 | 0.512 | 0.529 | 1.24 | 1.26 | 0.174 | 0.184 | 0.093 | 3533-24-12 |
| 1/2 | 0.515 | 0.525 | 1.115 | 1.135 | 0.165 | 0.175 | 0.093 | 3533-24-13 |
| 5/8 | 0.65 | 0.66 | 1.385 | 1.385 | 0.133 | 0.153 | 0.083 | 3533-28-11 |
| 5/8 | 0.64 | 0.655 | 1.49 | 1.51 | 0.221 | 0.233 | 0.125 | 3533-24-12 |