| BORE DIAMETER | 2.50 INCHES NOMINAL |
| COUNTERBORE DIAMETER AND LOCATION | 0.250 INCHES NOMINAL SINGLE HOLE |
| HOLE DIAMETER AND LOCATION | 2.50 INCHES NOMINAL SINGLE HOLE |
| MATERIAL | STEEL |
| NOMINAL THREAD SIZE | 0.3125 INCHES ALL HOLES |
| OUTSIDE DIAMETER | 3.75 INCHES NOMINAL |
| OVERALL WIDTH | 0.865 INCHES NOMINAL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | COLLAR, SHAFT, FACE MOUNTING |
| SCREW THREAD QUANTITY PER INCH AND LOCATION | 18 ALL HOLES |
| SECURING HOLE QUANTITY | 2 |
| SECURING HOLE TYPE AND LOCATION | THREADED ALL HOLES |
| STYLE DESIGNATOR | PLAIN ROUND |
| SURFACE TREATMENT | OXIDE |
| THICKNESS | 0.678 INCHES NOMINAL |