| MRC | Criteria | Characteristic |
|---|
| AAUB | HOLE DIAMETER | 0.315 INCHES MINIMUM AND 0.325 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.520 INCHES MINIMUM AND 0.540 INCHES MAXIMUM |
| ABKY | EXTERNAL PREBENT KEY LENGTH | 0.105 INCHES MINIMUM AND 0.135 INCHES MAXIMUM |
| ABLD | EXTERNAL TAPERED KEY WIDTH | 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM |
| ABLF | EXTERNAL PREBENT KEY WIDTH | 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM |
| ABLS | DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.325 INCHES MINIMUM AND 0.335 INCHES MAXIMUM |
| ABLX | OVERALL DISTANCE INCLUDING KEYS | 0.860 INCHES MINIMUM AND 0.900 INCHES MAXIMUM |
| ABMM | SPLIT KEY LENGTH | 0.160 INCHES MINIMUM AND 0.170 INCHES MAXIMUM |
| ABMQ | EXTERNAL KEY QUANTITY | 3 |
| ABPX | MATERIAL THICKNESS | 0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM |
| CSFW | ANGLE BETWEEN EXTERNAL KEYS | 58.0 DEGREES MINIMUM AND 62.0 DEGREES MAXIMUM |
| CSKN | EXTERNAL PREBENT KEY ANGLE | 28.0 DEGREES MINIMUM AND 32.0 DEGREES MAXIMUM |
| MATT | MATERIAL | STEEL COMP 321 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | KEY |
