| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.984 INCHES MINIMUM AND 1.016 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 4.234 INCHES MINIMUM AND 4.266 INCHES MAXIMUM |
| AASK | HEAD STYLE | HEXAGON |
| AASU | HEAD HEIGHT | 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.734 INCHES MINIMUM AND 0.766 INCHES MAXIMUM |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.234 INCHES MINIMUM FIRST HOLE AND 0.266 INCHES MAXIMUM FIRST HOLE |
| AHYM | NOMINAL THREAD DIAMETER | 0.500 INCHES |
| CBBL | FEATURES PROVIDED | FINISHED HEAD |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| CQFM | HARDNESS RATING | 217.0 BRINELL STANDARD MINIMUM OVERALL AND 269.0 BRINELL STANDARD MAXIMUM OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 4.093 INCHES MINIMUM FIRST HOLE AND 4.157 INCHES MAXIMUM FIRST HOLE |
| MATT | MATERIAL | STEEL COMP 1035 OVERALL |
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