| MRC | Criteria | Characteristic |
|---|
| AAWY | COUNTERBORE DIAMETER | 1.875 INCHES NOMINAL AND 2.125 INCHES NOMINAL AND 2.440 INCHES NOMINAL |
| AAWZ | COUNTERBORE DEPTH | 1.250 INCHES NOMINAL AND 1.312 INCHES NOMINAL AND 0.785 INCHES NOMINAL |
| ABHE | OUTSIDE DIAMETER | 5.257 INCHES NOMINAL |
| ABHP | OVERALL LENGTH | 4.156 INCHES NOMINAL |
| ABXV | BORE DIAMETER | 1.562 INCHES NOMINAL |
| ADGE | BORE LENGTH | 4.156 INCHES NOMINAL |
| AGGP | DRILLED HOLE DIAMETER | 0.375 INCHES NOMINAL |
| AGJS | PITCH DIAMETER | 5.257 INCHES NOMINAL |
| AHYF | SECURING HOLE QUANTITY | 2 |
| AQPL | FACE WIDTH | 2.000 INCHES NOMINAL |
| AQWM | GUIDE | INCLUDED |
| ARJD | DESIGN FORM | PLAIN |
| ASBP | BORE TYPE | STRAIGHT |
| ASXJ | METALLIC HARDNESS RATING AND LOCATION | 55.0 ROCKWELL C MINIMUM BODY AND 60.0 ROCKWELL C MAXIMUM BODY AND 55.0 ROCKWELL C MINIMUM HUB AND 60.0 ROCKWELL C MAXIMUM HUB |
| AXHQ | GROOVE QUANTITY | 1 |
| AXND | COUNTERBORE FEATURE | INCLUDED |
| BDRB | GROOVE POSITION | LOCATED IN CENTER |
| BDYS | COUNTERBORE LOCATION | BOTH ENDS |
| BFYT | HOLE LOCATION | LOCATED 180 DEG APART AND 0.500 IN. FROM END |
| BMHW | GUIDE TYPE | GROOVE |
| BSGG | KEYING FACILITY | NOT INCLUDED |
| BSNP | SECURING METHOD | DRILLED HOLE |
| BXSJ | LIGHTENING HOLE | NOT INCLUDED |
| BYDZ | PROTRUDING HUB CHARACTERISTIC | STEPPED |
| BYFB | GROOVE/STEP LOCATION | AA END |
| BYFF | SECURING LOCATION | AA END |
| BYFH | BELT/CHAIN/FILM SIZE FOR WHICH DESIGNED | SILENT CHAIN |
| BYFL | TEETH ROW QUANTITY | 2 |
| BYFM | CENTER TO CENTER DISTANCE BETWEEN TEETH ROWS | 1.062 INCHES NOMINAL |
| BYFN | TEETH QUANTITY PER ROW | 44 |
| BYFQ | HARDNESS RATING TEST METHOD | ROCKWELL |
| BYFR | TEETH HARDNESS RATING | 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM |
| BYFS | BORE BEARING | NOT INCLUDED |
| BYFW | HUB EXTERNAL KEYWAY | NOT INCLUDED |
| BYGF | TOOTH PITCH | 0.375 INCHES NOMINAL |
| BYZD | HUB END OUTSIDE DIAMETER AND LOCATION | 2.361 INCHES NOMINAL AA END AND 4.625 INCHES NOMINAL BB END |
| BYZF | DISTANCE FROM OUTSIDE FLANGE/RIM TO HUB END AND LOCATION | 1.750 INCHES NOMINAL AA END AND 0.406 INCHES NOMINAL BB END |
| BYZL | FIRST STEP FACE LARGEST DIAMETER AND LOCATION | 2.500 INCHES NOMINAL AA END |
| BYZM | SECOND STEP FACE LARGEST DIAMETER AND LOCATION | 2.750 INCHES NOMINAL AA END |
| BYZN | FIRST STEP LENGTH AND LOCATION | 0.562 INCHES NOMINAL AA END |
| BYZP | SECOND STEP LENGTH AND LOCATION | 0.625 INCHES NOMINAL AA END |
| BYZX | THIRD STEP LENGTH AND LOCATION | 0.562 INCHES NOMINAL AA END |
| CLYR | HUB END OUTSIDE DIAMETER AND LOCATION | 2.361 INCHES NOMINAL AA END |
| CLYS | DISTANCE FROM OUTSIDE FLANGE/RIM TO HUB END AND LOCATION | 1.750 INCHES NOMINAL AA END |
| MATT | MATERIAL | STEEL COMP 1340 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-624, COMP 1340-CANCELED FED SPEC SINGLE MATERIAL RESPONSE |
| STYL | III STYLE DESIGNATOR | PLAIN |
