| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0 250 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 0 250 INCHES NOMINAL |
| AASK | HEAD STYLE | HEADLESS SETSCREW |
| ABQJ | POINT STYLE | CUP |
| ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
| AHYM | NOMINAL THREAD DIAMETER | 0 250 INCHES |
| ASDB | WIDTH ACROSS FLATS | 0 125 INCHES MINIMUM AND 0 127 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQFM | HARDNESS RATING | 45 0 ROCKWELL C MINIMUM OVERALL AND 53 0 ROCKWELL C MAXIMUM OVERALL |
| MATT | MATERIAL | STEEL OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL OR ZINC OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416TY 2CL 3 FED SPEC 1ST TREATMENT RESPONSE OVERALL OR QQ-Z-325TY 2CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| ZZZT | NONDEFINITIVE SPECSTD DATA | 3 TYPE AND 4 STYLE |
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