| ATTACHMENT METHOD | MOUNTING HOLE |
| BODY STYLE | PLAIN, SOLID |
| BORE STYLE | PLAIN BOTH ENDS |
| BORE NOMINAL DIAMETER | 0.375 INCHES BOTH ENDS |
| END NOMINAL DIAMETER | 0.625 INCHES FIRST END |
| END NOMINAL LENGTH | 0.375 INCHES FIRST END |
| FACE NOMINAL WIDTH | 0.250 INCHES |
| FIRST STEP NOMINAL DIAMETER | 1.325 INCHES FIRST END |
| FIRST STEP NOMINAL LENGTH | 0.125 INCHES FIRST END |
| HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| HUB STYLE DESIGNATOR | 1 STEP FIRST END |
| MATERIAL DOCUMENT AND CLASSIFICATION | AISI/SAE 4340 ASSN STD SINGLE MATERIAL RESPONSE AND ED STD 66 FED STD 5TH MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| MOUNTING HOLE NOMINAL THREAD SIZE | 0.164 INCHES TRANSVERSELY THROUGH HUB, FIRST END |
| MOUNTING HOLE THREAD SERIES DESIGNATOR | 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 | 0.500 INCHES FIRST END |
| NOMINAL OUTSIDE DIAMETER | 1.556 INCHES |
| PITCH DIAMETER | 1.5000 INCHES NOMINAL |
| PRECISION CLASSIFICATION | QUALITY NUMBER 10 |
| PRESSURE ANGLE | 20.0000 DEGREES |
| STYLE DESIGNATOR | PROTRUDING HUB |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-P-16232 TYPE M,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE MANGANESE OVERALL |
| TEETH QUANTITY | 48 |
| TOOTH FORM | STANDARD |