| ATTACHMENT METHOD | MOUNTING HOLE |
| BODY STYLE | WEBBED, SOLID |
| BOLT HOLE CIRCLE NOMINAL DIAMETER | 4.000 INCHES TRANSVERSELY THROUGH SIDE |
| BORE NOMINAL DIAMETER | 3.125 INCHES BOTH ENDS |
| BORE STYLE | PLAIN BOTH ENDS |
| FACE NOMINAL WIDTH | 1.000 INCHES |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| HUB NOMINAL DIAMETER | 0.687 INCHES FIRST END |
| HUB STYLE DESIGNATOR | PLAIN FIRST END |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66,AISI/SAE 1330H,8630H,4130H FED STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 1330H AND STEEL COMP 8630H AND STEEL COMP 4130H OVERALL |
| PITCH ANGLE | 78.1667 DEGREES |
| PITCH DIAMETER | 7.7500 INCHES NOMINAL |
| PRECISION CLASSIFICATION | QUALITY NUMBER 12 |
| PRESSURE ANGLE | 20.0000 DEGREES |
| MOUNTING HOLE NOMINAL THREAD SIZE | 0.312 INCHES TRANSVERSELY THROUGH SIDE |
| MOUNTING HOLE THREAD QUANTITY PER INCH | 18 TRANSVERSELY THROUGH SIDE |
| MOUNTING HOLE THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH SIDE |
| MOUNTING HOLE TYPE AND QUANTITY | 6 THREADED TRANSVERSELY THROUGH SIDE |
| NOMINAL OUTSIDE DIAMETER | 7.776 INCHES |
| SURFACE TREATMENT | PHOSPHATE OVERALL |
| TEETH QUANTITY | 62 |
| TEETH TYPE | STRAIGHT |