| MRC | Criteria | Characteristic |
|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 1.125 INCHES MINIMUM AND 1.250 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 1.250 INCHES NOMINAL |
| AASK | HEAD STYLE | FLAT CHAMFER |
| AASL | HEAD DIAMETER | 0.550 INCHES MINIMUM AND 0.563 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
| AHYM | NOMINAL THREAD DIAMETER | 0.375 INCHES |
| ASDB | WIDTH ACROSS FLATS | 0.312 INCHES MINIMUM AND 0.316 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 16 |
| CQBC | MINIMUM TENSILE STRENGTH | 80000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 80.0 ROCKWELL B MINIMUM OVERALL |
| CQHQ | MINIMUM YIELD STRENGTH | 30000 POUNDS PER SQUARE INCH |
| CRTL | CRITICALITY CODE JUSTIFICATION | ZZZY |
| MATT | MATERIAL | STEEL COMP 302 OVERALL OR STEEL COMP 303 OVERALL OR STEEL COMP 304 OVERALL OR STEEL COMP 305 OVERALL OR STEEL COMP 316 OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| SPCL | SPECIAL TEST FEATURES | SPECIAL QUALITY CONTROL TESTING |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| TEST | TEST DATA DOCUMENT | 81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS,BROCHURES,ETC.,THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS,INDUSTRY DIRECTORIES,AND SIMILAR TRADE PUBLICATIONS,REFLECTI |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| ZZZY | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS |
