| ASA STANDARD CHAIN NUMBER | 25 |
| BORE DIAMETER | 0.503 INCHES NOMINAL |
| BORE LENGTH | 0.625 INCHES NOMINAL |
| BORE TYPE | STRAIGHT |
| DESIGN FORM | PLAIN |
| FURNISHED ITEMS AND QUANTITY | SETSCREW,TWO EACH |
| FACE WIDTH | 0.110 INCHES NOMINAL |
| FIRST END GROOVE DIAMETER | 0.750 INCHES NOMINAL AA END |
| FIRST END GROOVE WIDTH | 0.125 INCHES NOMINAL AA END |
| HARDNESS RATING TEST METHOD | NOT RATED |
| HOLE LOCATION | ON HUB PORTION OF SPROCKET BETWEEN HUB END AND FACE,90 DEG APART |
| HUB OUTSIDE DIAMETER | 1.000 INCHES NOMINAL AA END |
| OUTSIDE DIAMETER | 1.330 INCHES NOMINAL |
| OVERALL LENGTH | 0.625 INCHES NOMINAL |
| MATERIAL | PLASTIC |
| PITCH DIAMETER | 1.200 INCHES NOMINAL |
| PROTRUDING HUB CHARACTERISTIC | GROOVED |
| SECURING HOLE QUANTITY | 2 |
| SECURING LOCATION | AA END |
| SECURING METHOD | THREADED HOLE |
| STYLE DESIGNATOR | PLAIN |
| TEETH QUANTITY PER ROW | 15 |
| TEETH ROW QUANTITY | 1 |
| THREAD SIZE | 10 /0.190 IN./-32 |
| TOOTH PITCH | 0.250 INCHES NOMINAL |