| DESIGN FORM | PLAIN |
| TEETH ROW QUANTITY | 1 |
| TEETH QUANTITY PER ROW | 15 |
| TOOTH PITCH | 0.750 INCHES NOMINAL |
| MATERIAL | STEEL COMP 4140 |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE 4140 ASSN STD SINGLE MATERIAL RESPONSE |
| STYLE DESIGNATOR | PLAIN |
| OUTSIDE DIAMETER | 3.979 INCHES NOMINAL |
| OVERALL LENGTH | 1.250 INCHES NOMINAL |
| PITCH DIAMETER | 3.607 INCHES NOMINAL |
| FACE WIDTH | 0.459 INCHES NOMINAL |
| SURFACE TREATMENT | PHOSPHATE |
| ASA STANDARD CHAIN NUMBER | 60 |
| HARDNESS RATING TEST METHOD | ROCKWELL |
| TEETH HARDNESS RATING | 25.0 ROCKWELL C MINIMUM AND |
| 30.0 ROCKWELL C MAXIMUM |
| METALLIC HARDNESS RATING AND LOCATION | 25.0 ROCKWELL C MINIMUM BODY AND |
| 30.0 ROCKWELL C MAXIMUM BODY |
| BORE TYPE | STRAIGHT |
| BORE DIAMETER | 1.750 INCHES MINIMUM |
| BORE LENGTH | 1.250 INCHES NOMINAL |
| KEYING FACILITY TYPE | KEYWAY |
| QUANTITY | 1 |
| KEYWAY WIDTH | 0.500 INCHES MINIMUM AND |
| 0.502 INCHES MAXIMUM |
| DISTANCE FROM CENTER OF BORE TO BOTTOM OF KEYWAY | 1.111 INCHES MAXIMUM |
| PROTRUDING HUB CHARACTERISTIC | GROOVED |
| HUB OUTSIDE DIAMETER | 2.750 INCHES NOMINAL AA END |
| FIRST END GROOVE DIAMETER | 2.125 INCHES NOMINAL AA END |
| FIRST END GROOVE WIDTH | 0.290 INCHES NOMINAL AA END |
| FURNISHED ITEMS | KEYING FACILITY |
| SECURING METHOD | KEY |
| SECURING LOCATION | BOTH ENDS |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 10001 |
| DESIGN CONTROL REFERENCE | 3021137-1 |