| MATERIAL | STEEL COMP 4340 OR |
| STEEL COMP 4130 OR |
| STEEL COMP 4140 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM-A322 ASSN STD 1ST MATERIAL RESPONSE OR |
| ASTM-A331 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-STD-171 MIL STD SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND |
| 38.0 ROCKWELL C MAXIMUM OVERALL |
| TEETH QUANTITY | 64 |
| PRESSURE ANGLE | 20.0000 DEGREES |
| STYLE DESIGNATOR | PROTRUDING HUB |
| PITCH DIAMETER | 3.5556 INCHES NOMINAL |
| NOMINAL OUTSIDE DIAMETER | 3.645 INCHES |
| FACE NOMINAL WIDTH | 0.250 INCHES |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 1.133 INCHES SECOND END |
| BORE STYLE | INVOLUTE SPLINE BOTH ENDS |
| BORE NOMINAL DIAMETER | 0.563 INCHES BOTH ENDS |
| SPLINE QUANTITY | 19 BOTH ENDS |
| SPLINE PITCH DIAMETER | 0.5938 INCHES NOMINAL BOTH ENDS |
| HUB STYLE DESIGNATOR | PLAIN SECOND END |
| HUB NOMINAL DIAMETER | 0.870 INCHES SECOND END |
| BODY STYLE | WEBBED, WITH LIGHTENING HOLES |