| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.687 INCHES MINIMUM |
| AASB | FASTENER LENGTH | 2.546 INCHES NOMINAL |
| AASU | HEAD HEIGHT | 0.360 INCHES NOMINAL |
| AATB | WIDTH BETWEEN FLATS | 1.750 INCHES NOMINAL |
| AATN | SHOULDER DIAMETER | 1.2500 INCHES NOMINAL FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.688 INCHES NOMINAL FIRST SHOULDER |
| AHYM | NOMINAL THREAD DIAMETER | 1.125 INCHES |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| AASK | HEAD STYLE | HEXAGON |
| CMLP | THREAD QUANTITY PER INCH | 12 |
| MATT | MATERIAL | STEEL COMP 1212 OVERALL |
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