| Type of protective element | circlip |
| Material | spring steel |
| Plating material | black finish |
| BN standard | BN 813 |
| Symbol | Internal diameter | Outside diameter | Thickness | Shaft diameter |
|---|---|---|---|---|
| [mm] | [mm] | [mm] | [mm] | |
| B1.7/BN813 | 1.34 | 4 | 0.4 | 1.7 |
| B2.41/BN813 | 2.11 | 6 | 0.4 | 2.41 |
| B2.79/BN813 | 2.29 | 6.5 | 0.4 | 2.79 |
| B2.8B/BN813 | 2.13 | 6 | 0.6 | 2.8 |
| B3.73/BN813 | 3.23 | 8.75 | 0.6 | 3.73 |
| B4.77/BN813 | 4.12 | 11.3 | 0.6 | 4.77 |
| B5/BN813 | 3.83 | 8.5 | 0.7 | 5 |
| B6.35/BN813 | 5.44 | 12.9 | 0.7 | 6.35 |
| Symbol | Dimensions | d3 min | d3 max | m | n min |
|---|---|---|---|---|---|
| [mm] | [mm] | [mm] | [mm] | ||
| B1.7/BN813 | Fig. 1. | 2 | 2.5 | 0.44 | 0.8 |
| B2.41/BN813 | Fig. 1. | 3 | 4 | 0.44 | 0.8 |
| B2.79/BN813 | Fig. 1. | 3.5 | 4 | 0.44 | 0.8 |
| B2.8B/BN813 | Fig. 1. | 3.5 | 4 | 0.64 | 1 |
| B3.73/BN813 | Fig. 1. | 4 | 6 | 0.64 | 1 |
| B4.77/BN813 | Fig. 1. | 6 | 8 | 0.64 | 1 |
| B5/BN813 | Fig. 1. | 6 | 8 | 0.74 | 1.2 |
| B6.35/BN813 | Fig. 1. | 7 | 9 | 0.74 | 1.5 |