| STYLE DESIGNATOR | WEBBED OR SPOKED |
| OUTSIDE DIAMETER | 12.750 INCHES NOMINAL |
| OVERALL LENGTH | 4.250 INCHES NOMINAL |
| PITCH DIAMETER | 12.6250 INCHES NOMINAL |
| FACE WIDTH | 2.188 INCHES NOMINAL |
| HUB END OUTSIDE DIAMETER AND LOCATION | 4.468 INCHES NOMINAL AA END AND |
| 6.135 INCHES NOMINAL BB END |
| DISTANCE FROM OUTSIDE FLANGE/RIM TO HUB END AND LOCATION | 1.125 INCHES NOMINAL AA END AND |
| 0.939 INCHES NOMINAL BB END |
| DESIGN FORM | PLAIN |
| LIGHTENING HOLE | NOT INCLUDED |
| INTEGRAL COOLING VANE | NOT INCLUDED |
| MATERIAL AND LOCATION | IRON, CAST OVERALL |
| GROOVE SHAPE | V |
| GROOVE QUANTITY | 2 |
| GROOVE DEPTH | 0.875 INCHES NOMINAL |
| GROOVE WIDTH | 0.312 INCHES MINIMUM AND |
| 0.875 INCHES MAXIMUM |
| V GROOVE ANGLE IN DEG | 34.0 |
| BORE FEATURE | INCLUDED |
| BEARINGS | NOT INCLUDED |
| BORE TYPE | TAPERED |
| BORE LENGTH | 4.250 INCHES NOMINAL |
| TAPER BORE MAJOR DIAMETER | 3.115 INCHES NOMINAL |
| TAPER BORE MINOR DIAMETER | 2.770 INCHES NOMINAL |
| TAPER MAJOR DIAMETER LOCATION | AA END |
| COUNTERBORE FEATURE | INCLUDED |
| COUNTERBORE LOCATION | BB END |
| COUNTERBORE DIAMETER | 4.000 INCHES NOMINAL |
| COUNTERBORE DEPTH | 1.450 INCHES NOMINAL |
| KEYING FACILITY | INCLUDED |
| KEYING FACILITY TYPE | KEYWAY |
| QUANTITY | 1 |
| KEYWAY WIDTH | 0.500 INCHES NOMINAL |
| DISTANCE FROM CENTER OF BORE TO BOTTOM OF KEYWAY | 1.793 INCHES NOMINAL |
| PROTRUDING HUB CHARACTERISTIC | PLAIN |
| FIRST STEP FACE LARGEST DIAMETER AND LOCATION | 4.940 INCHES NOMINAL BOTH ENDS |
| FIRST STEP LENGTH AND LOCATION | 0.500 INCHES NOMINAL BOTH ENDS |
| SECOND STEP LENGTH AND LOCATION | 0.625 INCHES NOMINAL BOTH ENDS |
| HUB END OUTSIDE DIAMETER AND LOCATION | 4.468 INCHES NOMINAL BOTH ENDS |
| SPLIT HUB FEATURE | NOT INCLUDED |