Bore1 inChain Size#80Hub Diameter4-1/4 inKeyway Size1/4 x 1/8 inLength Through Bore4-3/4 inMaterialCarbon SteelO.D.6.27 inPitch1 inPitch Diameter5.759 inScrew Size5/16 inTeeth18TypePlain Bore Type B
| Material | Steel |
| Number Of Teeth | 18 |
| Outside Dia | 6.271" |
| Pitch | 1.000 in. |