| MRC | Name | Details |
|---|
| AASG | CASEHARDENING INDICATOR | NOT CASEHARDENED |
| AAWY | COUNTERBORE DIAMETER | 0.395 INCHES MINIMUM AND 0.405 INCHES MAXIMUM |
| AAWZ | COUNTERBORE DEPTH | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.498 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
| AQPL | FACE WIDTH | 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM |
| BCXD | BORE INSIDE DIAMETER | 0.301 INCHES MINIMUM AND 0.303 INCHES MAXIMUM |
| BQWC | CHAMFER/RADIUS OF OUTSIDE CORNER | "0.020 IN. MIN,0.040 IN. MAX RADIUS" |
| FEAT | SPECIAL FEATURES | "BORE INSIDE DIAMETER RELIEVED TO 0.321 IN. MIN,0.343 IN. MAX DIA BY 0.010 IN. MIN,0.020 IN. MAX LENGTH" |
| MATL | MATERIAL | "STEEL ALLOY,ASTM A322,COMP 4140 OR STEEL ALLOY,ASTM A322,COMP 41L40 OR STEEL ALLOY,ASTM A331,COMP 4140 OR STEEL ALLOY,ASTM A331,COMP 41L40" |
| MATT | MATERIAL | "STEEL ALLOY,ASTM A322,COMP 4140 OR STEEL ALLOY,ASTM A322,COMP 41L40 OR STEEL ALLOY,ASTM A331,COMP 4140 OR STEEL ALLOY,ASTM A331,COMP 41L40" |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | "ASTM A331, COMP 4140 OR COMP 41L40 ASSN STD ALL MATERIAL RESPONSES OR ASTM A322, COMP 4140 OR COMP 41L40 ASSN STD ALL MATERIAL RESPONSES" |
| SFTT | SURFACE TREATMENT | PHOSPHATE MANGANESE OR PHOSPHATE ZINC |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | "DOD-P-16232,TYPE M,CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE OR DOD-P-16232,TYPE Z,CLASS 1 MIL SPEC 2ND TREATMENT RESPONSE" |
| STYL | STYLE DESIGNATOR | "PLAIN, COUNTERBORED" |
| SURF | SURFACE TREATMENT | "PHOSPHATE,DOD-P-16232,TYPE M,CLASS 1 OR PHOSPHATE,DOD-P-16232,TYPE Z,CLASS 1" |