Bore1-1/8"Chain Size#40Hub Diameter2-7/8 inKeyway Size1/4 x 1/8 inLength Through Bore1 inMaterialCarbon SteelO.D.3.78 inPitch40Pitch Diameter3.513 inScrew Size5/16 inTeeth22TypeFinished Bore Type B
| Bore | 1-1/8" |
| Chain Size | #40 |
| Hub Diameter | 2-7/8 in |
| Keyway Size | 1/4 x 1/8 in |
| Length Through Bore | 1 in |
| Material | Carbon Steel |
| O.D. | 3.78 in |
| Pitch | 40 |
| Pitch Diameter | 3.513 in |
| Screw Size | 5/16 in |
| Teeth | 22 |
| Type | Finished Bore Type B |