| MATERIAL | STEEL COMP 4140 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE AND |
| AISI/SAE 4140 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE ZINC OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-16232 TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND |
| 38.0 ROCKWELL C MAXIMUM OVERALL |
| TEETH QUANTITY | 45 |
| TOOTH FORM | STUB |
| PRESSURE ANGLE | 20.0000 DEGREES |
| PRECISION CLASSIFICATION | QUALITY NUMBER 8 |
| STYLE DESIGNATOR | PROTRUDING HUB, RECESSED BODY |
| PITCH DIAMETER | 3.7500 INCHES NOMINAL |
| NOMINAL OUTSIDE DIAMETER | 3.908 INCHES |
| FACE NOMINAL WIDTH | 0.280 INCHES |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.430 INCHES FIRST END |
| BODY RECESS NOMINAL DEPTH | 0.280 INCHES SECOND END |
| BORE STYLE | PLAIN BOTH ENDS |
| BORE NOMINAL DIAMETER | 0.4871 INCHES BOTH ENDS |
| HUB STYLE DESIGNATOR | PLAIN FIRST END |
| HUB NOMINAL DIAMETER | 1.000 INCHES FIRST END |
| BODY STYLE | PLAIN, SOLID |
| ATTACHMENT METHOD | MOUNTING HOLE |
| MOUNTING HOLE TYPE AND QUANTITY | 2 PLAIN TRANSVERSELY THROUGH FACE |
| MOUNTING HOLE NOMINAL DIAMETER | 0.425 INCHES TRANSVERSELY THROUGH FACE |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 05606 |
| DESIGN CONTROL REFERENCE | 142D5196-2 |