| MATERIAL | STEEL COMP 4140 AND |
| STEEL COMP 8640 AND |
| STEEL COMP 8740 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66,AISI/SAE 4140 FED STD SINGLE MATERIAL RESPONSE AND |
| 66,AISI/SAE 8640 FED STD SINGLE MATERIAL RESPONSE AND |
| 66,AISI/SAE 8740 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE MANGANESE SHAFT/HUB |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-P-16232,TYPE M,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE SHAFT/HUB |
| HARDNESS RATING | 50.0 ROCKWELL C MINIMUM AND |
| 55.0 ROCKWELL C MAXIMUM TEETH |
| 32.0 ROCKWELL C MINIMUM AND |
| 38.0 ROCKWELL C MAXIMUM OVERALL |
| CONSTRUCTION | SOLID |
| NOMINAL OUTSIDE DIAMETER | 4.249 INCHES FOURTH GEAR |
| 1.799 INCHES FIFTH GEAR |
| NOMINAL OVERALL LENGTH | 3.375 INCHES |
| HUB STYLE DESIGNATOR | 1 STEP BOTH ENDS |
| HUB NOMINAL LENGTH | 0.500 INCHES FIRST END |
| 1.5630 INCHES SECOND END |
| 0.188 INCHES BETWEEN FIRST AND SECOND GEAR |
| 1.1250 INCHES BETWEEN SECOND AND THIRD GEAR |
| HUB NOMINAL DIAMETER | 0.669 INCHES BETWEEN FIRST AND SECOND GEAR |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 19207 |
| DESIGN CONTROL REFERENCE | 7333309 |