Bore1-1/4"Chain Size#40Hub Diameter3-1/4 inKeyway Size1/4 x 1/8 inLength Through Bore1 inMaterialCarbon SteelO.D.4.74 inPitch40Pitch Diameter4.465 inScrew Size5/16 inTeeth28TypeFinished Bore Type B
| Bore | 1-1/4" |
| Chain Size | #40 |
| Hub Diameter | 3-1/4 in |
| Keyway Size | 1/4 x 1/8 in |
| Length Through Bore | 1 in |
| Material | Carbon Steel |
| O.D. | 4.74 in |
| Pitch | 40 |
| Pitch Diameter | 4.465 in |
| Screw Size | 5/16 in |
| Teeth | 28 |
| Type | Finished Bore Type B |