| MATERIAL | STEEL COMP E4340 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND |
| 44.0 ROCKWELL C MAXIMUM OVERALL |
| CONSTRUCTION | SOLID |
| DESIGN TYPE | SPUR FIRST GEAR |
| SPUR SECOND GEAR |
| NOMINAL OUTSIDE DIAMETER | 2.0520 INCHES FIRST GEAR |
| 0.6080 INCHES SECOND GEAR |
| NOMINAL OVERALL LENGTH | 1.270 INCHES |
| BORE STYLE | PLAIN BOTH ENDS |
| BORE NOMINAL DIAMETER | 0.203 INCHES BOTH ENDS |
| COUNTERBORE NOMINAL DEPTH | 0.880 INCHES BOTH ENDS |
| COUNTERBORE NOMINAL DIAMETER | 0.2500 INCHES BOTH ENDS |
| HUB STYLE DESIGNATOR | PLAIN FIRST END |
| PLAIN SECOND END |
| HUB NOMINAL LENGTH | 0.2300 INCHES FIRST END |
| 0.200 INCHES SECOND END |
| 0.230 INCHES BETWEEN FIRST AND SECOND GEAR |
| HUB NOMINAL DIAMETER | 0.2497 INCHES BETWEEN FIRST AND SECOND GEAR |
| 0.6240 INCHES BETWEEN SECOND AND THIRD GEAR |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 81039 |
| DESIGN CONTROL REFERENCE | 1091524 |