| MRC | Criteria | Characteristic |
|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 1.658 INCHES MINIMUM AND 1.708 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 2.178 INCHES MINIMUM AND 2.198 INCHES MAXIMUM |
| AASK | HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| AASU | HEAD HEIGHT | 0.272 INCHES MINIMUM AND 0.292 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.300 INCHES MINIMUM AND 0.315 INCHES MAXIMUM |
| AATC | EXTENDED WASHER DIAMETER | 0.465 INCHES MINIMUM AND 0.485 INCHES MAXIMUM |
| AATD | EXTENDED WASHER THICKNESS | 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.311 INCHES NOMINAL FIRST SHOULDER |
| AATN | SHOULDER DIAMETER | 0.312 INCHES NOMINAL SECOND SHOULDER |
| AATX | SHOULDER LENGTH | 0.150 INCHES NOMINAL SECOND SHOULDER |
| AATX | SHOULDER LENGTH | 0.175 INCHES NOMINAL FIRST SHOULDER |
| AAUB | HOLE DIAMETER | 0.070 INCHES NOMINAL |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| ASXK | HOLE QUANTITY | 4 |
| BQDM | HOLE TYPE | DRILLED |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQFM | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| CRHC | HOLE CONFIGURATION STYLE | DOUBLE HEXAGON LONGITUDINAL HOLE |
| CRTL | CRITICALITY CODE JUSTIFICATION | SUPP |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| FEAT | SPECIAL FEATURES | SHOULDER FURTHEREST FROM HEAD THREADED 0.312-32 BY 3A FIT |
| MATT | MATERIAL | STEEL COMP 8740 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SUPP | SUPPLEMENTARY FEATURES | FAILURE COULD CAUSE CATASTROPHIC OR CRITICAL FAILURE RESULTING IN THE LOSS OF OR SERIOUS DAMAGE TO THE AIRCRAFT. WPN SYS OR UNCOMMANDED ENGINE SHUTDOWN |
| THSD | THREAD SERIES DESIGNATOR | UNF |
