| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AAWY | COUNTERBORE DIAMETER | 2.9743 INCHES MINIMUM NUT AND 2.9943 INCHES MAXIMUM NUT |
| ABQU | DRIVE POINT DEPTH | 0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM |
| ACTA | NUT STYLE | ROUND |
| ACTD | NUT DIAMETER | 3.984 INCHES MINIMUM AND 4.016 INCHES MAXIMUM |
| ADBG | NUT THICKNESS | 0.578 INCHES MINIMUM AND 0.609 INCHES MAXIMUM |
| ADBH | DRIVE POINT WIDTH | 0.359 NOMINAL MILS AND 0.391 NOMINAL CENTIMETERS |
| ADBM | DRIVE POINT QUANTITY | 8 |
| ADFK | NUT COUNTERBORE DEPTH | 0.062 INCHES MINIMUM NUT AND 0.125 INCHES MAXIMUM NUT |
| BZRR | THREAD SERIES | UNS |
| CMLP | THREAD QUANTITY PER INCH | 18 |
| CQFM | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| CQJX | NOMINAL THREAD SIZE | 2.750 INCHES |
| CRSQ | COUNTERSINK ANGLE | 89.5 DEGREES MINIMUM NUT AND 90.5 DEGREES MAXIMUM NUT |
| MATT | MATERIAL | STEEL COMP 4130 OVERALL OR STEEL COMP 4140 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
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