| BORE TYPE | STRAIGHT SPLINE |
| COUNTERBORE DEPTH | 1.016 INCHES NOMINAL |
| COUNTERBORE DIAMETER | 3.280 INCHES MINIMUM AND 3.283 INCHES MAXIMUM |
| COUNTERBORE LOCATION | AA END |
| DESIGN FORM | PLAIN |
| FURNISHED ITEMS | COUNTERBORE |
| FACE WIDTH | 2.555 INCHES MINIMUM AND 3.805 INCHES MAXIMUM |
| FIRST STEP DIAMETER | 4.080 INCHES MINIMUM AND 4.090 INCHES MAXIMUM BOTH ENDS |
| FIRST STEP LENGTH | 0.406 INCHES NOMINAL BOTH ENDS |
| HARDNESS RATING TEST METHOD | ROCKWELL |
| HUB OUTSIDE DIAMETER | 3.990 INCHES MINIMUM AND 4.000 INCHES MAXIMUM AA END |
| HUB OUTSIDE DIAMETER | 4.438 INCHES NOMINAL BB END |
| OUTSIDE DIAMETER | 8.070 INCHES NOMINAL |
| OVERALL LENGTH | 3.180 INCHES MINIMUM AND 3.188 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | FED STD NO. 66,AISI C1040 FED STD SINGLE MATERIAL RESPONSE OR SAE 1040 ASSN STD SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 1040 |
| METALLIC HARDNESS RATING AND LOCATION | 15.2 ROCKWELL C MINIMUM BODY AND 22.0 ROCKWELL C MAXIMUM BODY |
| PITCH DIAMETER | 7.036 INCHES MINIMUM AND 7.099 INCHES MAXIMUM |
| PROTRUDING HUB CHARACTERISTIC | STEPPED |
| SPLINE LENGTH | 2.164 INCHES MINIMUM AND 2.172 INCHES MAXIMUM |
| SPLINE MAJOR DIAMETER | 3.250 INCHES MINIMUM AND 3.280 INCHES MAXIMUM |
| SPLINE MINOR DIAMETER | 2.762 INCHES MINIMUM AND 2.765 INCHES MAXIMUM |
| SPLINE QUANTITY | 6 |
| STYLE DESIGNATOR | PLAIN |
| TEETH QUANTITY PER ROW | 11 |
| TEETH ROW QUANTITY | 1 |
| TEETH HARDNESS RATING | 15.2 ROCKWELL C MINIMUM AND 22.8 ROCKWELL C MAXIMUM |
| TOOTH PITCH | 2.000 INCHES NOMINAL |