| DESIGN FORM | PLAIN |
| TEETH ROW QUANTITY | 1 |
| TEETH QUANTITY PER ROW | 48 |
| TOOTH PITCH | 1.250 INCHES NOMINAL |
| MATERIAL | STEEL UNS K11801 |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-16113, TYPE 1, GRADE M MIL SPEC SINGLE MATERIAL RESPONSE |
| STYLE DESIGNATOR | PLAIN |
| OUTSIDE DIAMETER | 19.821 INCHES NOMINAL |
| OVERALL LENGTH | 2.125 INCHES NOMINAL |
| PITCH DIAMETER | 19.112 INCHES NOMINAL |
| FACE WIDTH | 0.692 INCHES NOMINAL |
| ASA STANDARD CHAIN NUMBER | 100 |
| HARDNESS RATING TEST METHOD | ROCKWELL |
| BORE TYPE | STRAIGHT SPLINE |
| SPLINE QUANTITY | 6 |
| SPLINE MAJOR DIAMETER | 2.247 INCHES MINIMUM AND |
| 2.249 INCHES MAXIMUM |
| SPLINE LENGTH | 2.125 INCHES NOMINAL |
| HUB OUTSIDE DIAMETER | 4.500 INCHES NOMINAL BOTH ENDS |
| SPLINE MINOR DIAMETER | 2.032 INCHES MINIMUM AND |
| 2.034 INCHES MAXIMUM |
| DISTANCE FROM HUB END TO FLANGE END | 0.976 INCHES NOMINAL AA END |
| 0.457 INCHES NOMINAL BB END |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 80020 |
| DESIGN CONTROL REFERENCE | 55-3866-1 |