| ATTACHMENT METHOD | MOUNTING HOLE |
| BORE STYLE | PLAIN BOTH ENDS |
| BORE NOMINAL DIAMETER | 0.313 INCHES BOTH ENDS |
| FACE NOMINAL WIDTH | 0.250 INCHES |
| HARDNESS RATING | 47.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 8740 OVERALL |
| MOUNTING HOLE NOMINAL DIAMETER | 0.110 INCHES TRANSVERSELY THROUGH HUB, FIRST END |
| MOUNTING HOLE TYPE AND QUANTITY | 2 PLAIN TRANSVERSELY THROUGH HUB, FIRST END |
| NOMINAL OUTSIDE RADIUS | 0.559 INCHES |
| NOMINAL OVERALL LENGTH | 0.250 INCHES |
| PITCH RADIUS | 0.5040 INCHES NOMINAL |
| PRECISION CLASSIFICATION | QUALITY NUMBER 6 OR QUALITY NUMBER 7 |
| PRESSURE ANGLE | 20.0000 DEGREES |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |
| TEETH QUANTITY | 53 |
| TOOTH FORM | STUB |