| DISTANCE FROM HUB END TO FLANGE END | 0.530 INCHES NOMINAL AA END |
| DRILLED HOLE DIAMETER | 0.189 INCHES MINIMUM AND 0.192 INCHES MAXIMUM |
| BORE DIAMETER | 0.627 INCHES NOMINAL |
| BORE LENGTH | 0.670 INCHES NOMINAL |
| BORE TYPE | STRAIGHT |
| DESIGN FORM | PLAIN |
| FACE WIDTH | 0.135 INCHES NOMINAL |
| HARDNESS RATING TEST METHOD | ROCKWELL |
| HOLE LOCATION | AA PORTION OF HUB |
| HUB OUTSIDE DIAMETER | 1.125 INCHES NOMINAL AA END |
| OUTSIDE DIAMETER | 3.000 INCHES NOMINAL |
| OVERALL LENGTH | 0.670 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-18729, COMP 4130, COND N MIL SPEC 2ND MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 4130 |
| METALLIC HARDNESS RATING AND LOCATION | 33.0 ROCKWELL C MINIMUM HUB AND 38.0 ROCKWELL C MAXIMUM HUB |
| PROTRUDING HUB CHARACTERISTIC | PLAIN |
| SECURING HOLE QUANTITY | 2 |
| SECURING METHOD | DRILLED HOLE |
| SPECIAL FEATURES | ITEM NAME, SPROCKET REAR UNLOAD |
| STYLE DESIGNATOR | PLAIN |
| SURFACE TREATMENT | PHOSPHATE |
| TEETH HARDNESS RATING | 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM |
| TEETH QUANTITY PER ROW | 5 |
| TEETH ROW QUANTITY | 1 |