| ATTACHMENT METHOD | MOUNTING HOLE |
| BODY RECESS NOMINAL DEPTH | 0.250 INCHES SECOND END |
| BODY STYLE | WEBBED, OFFSET, SOLID |
| BORE NOMINAL DIAMETER | 0.313 INCHES BOTH ENDS |
| BORE STYLE | PLAIN BOTH ENDS |
| END NOMINAL DIAMETER | 0.563 INCHES FIRST END |
| END NOMINAL LENGTH | 0.375 INCHES FIRST END |
| FACE NOMINAL WIDTH | 0.312 INCHES |
| FIRST STEP NOMINAL DIAMETER | 1.203 INCHES FIRST END |
| FIRST STEP NOMINAL LENGTH | 0.188 INCHES FIRST END |
| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL |
| HUB STYLE DESIGNATOR | 1 STEP FIRST END |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758,COMP 4130,C4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| PITCH DIAMETER | 1.6250 INCHES NOMINAL |
| MATERIAL | STEEL COMP 4130 OVERALL |
| MOUNTING HOLE NOMINAL DIAMETER | 0.078 INCHES TRANSVERSELY THROUGH HUB FIRST END |
| MOUNTING HOLE NOMINAL THREAD SIZE | 0.086 INCHES 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 PLAIN AND 1 THREADED TRANSVERSELY THROUGH HUB FIRST END |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.438 INCHES FIRST END |
| NOMINAL OUTSIDE DIAMETER | 1.688 INCHES |
| PRESSURE ANGLE | 20.0000 DEGREES |
| STYLE DESIGNATOR | PROTRUDING HUB, RECESSED BODY |
| SURFACE TREATMENT | OXIDE OVERALL |
| TEETH QUANTITY | 52 |
| TOOTH FORM | STANDARD |