Body styleBlockBore diameter (in)1Bore shapeRoundBore typeShaft-ReadyChain number821Height4.00Length5.75MaterialNylonNet Weight1.50Number of keyways1Number of set screws1 SetscrewNumber of Teeth21Pitch diameter (in)5.508Pitch diameter (mm)139.9Sprocket constructionMolded Split SprocketSprocket Series821Unit of DimensionINVolume0.573Volume UnitGLLWeight unitLBWidth5.75
| Body style | Block |
| Bore diameter (in) | 1 |
| Bore shape | Round |
| Bore type | Shaft-Ready |
| Chain number | 821 |
| Height | 4.00 |
| Length | 5.75 |
| Material | Nylon |
| Net Weight | 1.50 |
| Number of keyways | 1 |
| Number of set screws | 1 Setscrew |
| Number of Teeth | 21 |
| Pitch diameter (in) | 5.508 |
| Pitch diameter (mm) | 139.9 |
| Sprocket construction | Molded Split Sprocket |
| Sprocket Series | 821 |
| Unit of Dimension | IN |
| Volume | 0.573 |
| Volume Unit | GLL |
| Weight unit | LB |
| Width | 5.75 |