| BODY STYLE | PLAIN, SOLIDPLAIN, SOLID |
| BORE NOMINAL DIAMETER | 0.500 INCHES BOTH ENDS0.500 INCHES BOTH ENDS |
| FACE NOMINAL WIDTH | 0.250 INCHES0.250 INCHES |
| HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL40.0 ROCKWELL C MAXIMUM OVERALL |
| HUB NOMINAL DIAMETER | 0.750 INCHES FIRST END0.750 INCHES FIRST END |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,CLASS 416,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALLQQ-S-763,CLASS 416,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 416 OVERALLSTEEL COMP 416 OVERALL |
| MOUNTING HOLE THREAD QUANTITY PER INCH | 32 TRANSVERSELY THROUGH HUB FIRST END32 TRANSVERSELY THROUGH HUB FIRST END |
| MOUNTING HOLE THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB FIRST ENDUNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB FIRST END |
| MOUNTING HOLE TYPE AND QUANTITY | 1 THREADED TRANSVERSELY THROUGH HUB FIRST END1 THREADED TRANSVERSELY THROUGH HUB FIRST END |
| NOMINAL OVERALL LENGTH | 0.625 INCHES0.625 INCHES |
| PITCH DIAMETER | 4.0000 INCHES NOMINAL4.0000 INCHES NOMINAL |
| PRECISION CLASSIFICATION | QUALITY NUMBER 11QUALITY NUMBER 11 |
| PRESSURE ANGLE | 20.0000 DEGREES20.0000 DEGREES |
| STYLE DESIGNATOR | PROTRUDING HUBPROTRUDING HUB |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLMIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALLPASSIVATE OVERALL |
| TEETH QUANTITY | 8080 |
| TOOTH FORM | STANDARDSTANDARD |