| ASA STANDARD CHAIN NUMBER | 40-2 |
| BOLT CIRCLE DIAMETER | 1.625 INCHES NOMINAL |
| BORE DIAMETER | 0.750 INCHES NOMINAL |
| BORE LENGTH | 0.875 INCHES NOMINAL |
| BORE TYPE | STRAIGHT |
| DESIGN FORM | PLAIN |
| DISTANCE FROM HUB END TO FLANGE END | 0.591 INCHES NOMINAL AA END |
| FACE WIDTH | 0.284 INCHES NOMINAL |
| FIRST STEP DIAMETER | 2.032 INCHES NOMINAL AA END |
| FIRST STEP LENGTH | 0.142 INCHES NOMINAL AA END |
| HARDNESS RATING TEST METHOD | NOT RATED |
| HOLE LOCATION | ON SPROCKET FACE |
| HUB OUTSIDE DIAMETER | 1.125 INCHES NOMINAL AND 2.032 INCHES NOMINAL AA END |
| OUTSIDE DIAMETER | 2.814 INCHES NOMINAL |
| OVERALL LENGTH | 0.875 INCHES NOMINAL |
| MATERIAL | STEEL |
| PITCH DIAMETER | 2.563 INCHES NOMINAL |
| PROTRUDING HUB CHARACTERISTIC | STEPPED |
| SECOND STEP LENGTH | 0.449 INCHES NOMINAL AA END |
| SECURING HOLE QUANTITY | 3 |
| SECURING LOCATION | AA END |
| SECURING METHOD | THREADED HOLE |
| STYLE DESIGNATOR | PLAIN |
| TEETH ROW QUANTITY | 1 |
| TEETH QUANTITY PER ROW | 16 |
| THREAD SIZE | 0.250-28 |
| TOOTH PITCH | 0.500 INCHES NOMINAL |