| ATTACHMENT METHOD | MOUNTING HOLE |
| BODY STYLE | PLAIN, WITH LIGHTENING HOLES |
| BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS |
| BORE STYLE | PLAIN BOTH ENDS |
| FACE NOMINAL WIDTH | 0.125 INCHES |
| HUB NOMINAL DIAMETER | 0.500 INCHES FIRST END |
| HUB STYLE DESIGNATOR | PINNED FIRST END |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-7720,COMP 303S MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 303 OVERALL |
| PITCH DIAMETER | 1.9995 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM |
| MOUNTING HOLE NOMINAL THREAD SIZE | 0.112 INCHES TRANSVERSELY THROUGH HUB FIRST END |
| MOUNTING HOLE THREAD QUANTITY PER INCH | 40 TRANSVERSELY THROUGH HUB FIRST END |
| MOUNTING HOLE THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB FIRST END |
| MOUNTING HOLE TYPE AND QUANTITY | 1 THREADED TRANSVERSELY THROUGH HUB FIRST END |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.250 INCHES FIRST END |
| NOMINAL OUTSIDE DIAMETER | 2.039 INCHES |
| NOMINAL OVERALL LENGTH | 0.375 INCHES |
| PRECISION CLASSIFICATION | QUALITY NUMBER 13 OR QUALITY NUMBER 14 |
| PRESSURE ANGLE | 20.0000 DEGREES |
| STYLE DESIGNATOR | PROTRUDING HUB |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| TEETH QUANTITY | 96 |
| TOOTH FORM | STANDARD |