| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 1.305 INCHES MINIMUM AND 1.430 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 1.430 INCHES NOMINAL |
| AASK | HEAD STYLE | HEADLESS (SETSCREW) |
| ABQJ | POINT STYLE | CONE |
| 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 |
| MATT | MATERIAL | STEEL COMP 303 OVERALL OR STEEL COMP 303SE OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | 99643-SPS 209 METHOD 1 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
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