| ASA STANDARD CHAIN NUMBER | 25 |
| BORE DIAMETER | 0.515 INCHES NOMINAL |
| BORE LENGTH | 0.852 INCHES NOMINAL |
| BORE TYPE | STRAIGHT |
| DESIGN FORM | PLAIN |
| DISTANCE FROM HUB END TO FLANGE END | 0.745 INCHES NOMINAL BOTH ENDS |
| FURNISHED ITEMS | LIGHTENING HOLE |
| FACE WIDTH | 0.107 INCHES NOMINAL |
| FIRST STEP DIAMETER | 0.940 INCHES NOMINAL BOTH ENDS |
| HARDNESS RATING TEST METHOD | ROCKWELL |
| HUB OUTSIDE DIAMETER | 0.787 INCHES NOMINAL BOTH ENDS |
| OUTSIDE DIAMETER | 3.084 INCHES NOMINAL |
| OVERALL LENGTH | 0.852 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763, CLASS 410 FED SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 410 |
| METALLIC HARDNESS RATING AND LOCATION | 26.0 ROCKWELL C MINIMUM BODY AND 36.0 ROCKWELL C MAXIMUM BODY |
| PITCH DIAMETER | 2.948 INCHES NOMINAL |
| PROTRUDING HUB CHARACTERISTIC | STEPPED |
| SECOND STEP LENGTH | 0.283 INCHES NOMINAL BOTH ENDS |
| STYLE DESIGNATOR | PLAIN |
| SURFACE TREATMENT | PASSIVATE |
| TEETH ROW QUANTITY | 1 |
| TEETH HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM |
| TEETH QUANTITY PER ROW | 37 |
| TOOTH PITCH | 0.250 INCHES NOMINAL |