| MRC | Name | Details |
|---|
| AAHG | FIRST END GROOVE WIDTH | 0.277 INCHES MINIMUM AND 0.282 INCHES MAXIMUM AA END |
| AAHH | FIRST END GROOVE DIAMETER | 0.812 INCHES NOMINAL AA END |
| ABHE | OUTSIDE DIAMETER | 1.246 INCHES NOMINAL |
| ABPR | FIRST STEP DIAMETER | 0.937 INCHES NOMINAL AA END |
| ABPS | FIRST STEP LENGTH | 0.360 INCHES MINIMUM AND 0.365 INCHES MAXIMUM AA END |
| ABPU | SECOND STEP LENGTH | 0.125 INCHES NOMINAL AA END |
| ABXV | BORE DIAMETER | 0.625 INCHES MINIMUM AND 0.626 INCHES MAXIMUM |
| ADGE | BORE LENGTH | 0.901 INCHES MINIMUM AND 0.906 INCHES MAXIMUM |
| AGJS | PITCH DIAMETER | 1.124 INCHES NOMINAL |
| ALNC | HUB OUTSIDE DIAMETER | 0.811 INCHES MINIMUM AND 0.812 INCHES MAXIMUM AA END |
| AQWM | GUIDE | NOT INCLUDED |
| ARJD | DESIGN FORM | PLAIN |
| ASBP | BORE TYPE | STRAIGHT |
| ASXJ | METALLIC HARDNESS RATING AND LOCATION | 55.0 ROCKWELL C MINIMUM HUB |
| AXND | COUNTERBORE FEATURE | NOT INCLUDED |
| BSGG | KEYING FACILITY | NOT INCLUDED |
| BXSJ | LIGHTENING HOLE | NOT INCLUDED |
| BYDZ | PROTRUDING HUB CHARACTERISTIC | STEPPED OR GROOVED |
| BYFB | GROOVE/STEP LOCATION | AA END |
| BYFH | BELT/CHAIN/FILM SIZE FOR WHICH DESIGNED | ROLLER CHAIN |
| BYFJ | ROLLER CHAIN PITCH TYPE FOR WHICH DESIGNED | SINGLE PITCH |
| BYFL | TEETH ROW QUANTITY | 1 |
| BYFN | TEETH QUANTITY PER ROW | 14 |
| BYFP | ASA STANDARD CHAIN NUMBER | 25 |
| BYFQ | HARDNESS RATING TEST METHOD | ROCKWELL |
| BYFR | TEETH HARDNESS RATING | 27.0 ROCKWELL C MINIMUM |
| BYFW | HUB EXTERNAL KEYWAY | NOT INCLUDED |
| BYGF | TOOTH PITCH | 0.250 INCHES NOMINAL |
| BYZD | HUB END OUTSIDE DIAMETER AND LOCATION | 0.811 INCHES MINIMUM AA END AND 0.812 INCHES MAXIMUM AA END AND 0.812 INCHES NOMINAL BB END |
| BYZL | FIRST STEP FACE LARGEST DIAMETER AND LOCATION | 0.937 INCHES NOMINAL AA END |
| BYZN | FIRST STEP LENGTH AND LOCATION | 0.360 INCHES MINIMUM AA END AND 0.365 INCHES MAXIMUM AA END |
| BYZP | SECOND STEP LENGTH AND LOCATION | 0.125 INCHES NOMINAL AA END |
| BYZR | FIRST END GROOVE DIAMETER AND LOCATION | 0.812 INCHES NOMINAL AA END |
| BYZS | FIRST END GROOVE WIDTH AND LOCATION | 0.277 INCHES MINIMUM AA END AND 0.282 INCHES MAXIMUM AA END |
| BYZT | FIRST END LENGTH FROM GROOVE TO END AND LOCATION | 0.485 INCHES MINIMUM AA END AND 0.490 INCHES MAXIMUM AA END |
| CLYR | HUB END OUTSIDE DIAMETER AND LOCATION | 0.811 INCHES MINIMUM AA END AND 0.812 INCHES MAXIMUM AA END |
| CLYS | DISTANCE FROM OUTSIDE FLANGE/RIM TO HUB END AND LOCATION | 0.767 INCHES NOMINAL AA END |
| MATL | MATERIAL | "STEEL,MIL-H-7493,COMP 4620,COND E4" |
| MATT | MATERIAL | "STEEL,MIL-H-7493,COMP 4620,COND E4" |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | "MIL-H-7493,COMP 4620,COND E4 MIL SPEC SINGLE MATERIAL RESPONSE" |
| SFTT | SURFACE TREATMENT | CADMIUM |
| STYL | III STYLE DESIGNATOR | PLAIN |
| STYL | STYLE DESIGNATOR | PLAIN |
| SURF | SURFACE TREATMENT | CADMIUM PLATED |
| ZZZV | III FSC APPLICATION DATA | "WINCH,ACFT MTD" |
| ZZZV | FSC APPLICATION DATA | "WINCH,ACFT MTD" |