| ATTACHMENT METHOD | MOUNTING HOLE |
| BORE STYLE | W/ KEYWAY BOTH ENDS |
| BORE NOMINAL DIAMETER | 0.375 INCHES BOTH ENDS |
| END NOMINAL DIAMETER | 0.435 INCHES FIRST END |
| END NOMINAL LENGTH | 0.031 INCHES FIRST END |
| FACE NOMINAL WIDTH | 0.188 INCHES |
| FIRST STEP NOMINAL DIAMETER | 0.516 INCHES FIRST END |
| FIRST STEP NOMINAL LENGTH | 0.094 INCHES FIRST END |
| HUB STYLE DESIGNATOR | 2 STEPS FIRST END |
| KEYWAY NOMINAL WIDTH | 0.096 INCHES BOTH ENDS |
| MATERIAL | STEEL COMP 303 FIRST GEAR |
| MOUNTING HOLE NOMINAL THREAD SIZE | 0.112 INCHES AXIALLY THROUGH BODY, FIRST END |
| MOUNTING HOLE THREAD QUANTITY PER INCH | 40 AXIALLY THROUGH BODY, FIRST END |
| MOUNTING HOLE THREAD SERIES DESIGNATOR | UNC AXIALLY THROUGH BODY, FIRST END |
| MOUNTING HOLE TYPE AND QUANTITY | 2 THREADED AXIALLY THROUGH BODY, FIRST END |
| NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 0.246 INCHES BOTH ENDS |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.347 INCHES FIRST END |
| NOMINAL OUTSIDE DIAMETER | 3.163 INCHES |
| PITCH DIAMETER | 3.1250 INCHES NOMINAL |
| PRESSURE ANGLE | 14.5000 DEGREES |
| SECOND STEP NOMINAL DIAMETER | 0.688 INCHES FIRST END |
| SECOND STEP NOMINAL LENGTH | 0.222 INCHES FIRST END |
| STYLE DESIGNATOR | PROTRUDING HUB |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-STD-171,5.4 MIL STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| TEETH QUANTITY | 150 |
| TOOTH FORM | STANDARD |