Construction typeBlockDatum diameter4.6800 in, 118.872 mmMaterialCast ironNumber of grooves4.0000O.D. (in)4.6800 , 118.872 mm
| Construction type | Block |
| Datum diameter | 4.6800 in, 118.872 mm |
| Material | Cast iron |
| Number of grooves | 4.0000 |
| O.D. (in) | 4.6800 , 118.872 mm |