| CRITICALITY CODE JUSTIFICATION | SUPP |
| FASTENER LENGTH | 0.746 INCHES MINIMUM AND 0.786 INCHES MAXIMUM |
| HARDNESS RATING | 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.172 INCHES NOMINAL |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD DIAMETER | 0.312 INCHES |
| SPECIAL FEATURES | 3RD SHOULDER DIA IN. NOM 0.4336; 4TH SHOULDER DIA IN. NOM 0.4356; 3RD SHOULDER LG IN. NOM 0.257; 4TH SHOULDER LG IN. NOM 0.263 |
| SHOULDER DIAMETER | 0.490 INCHES NOMINAL FIRST SHOULDER |
| SHOULDER DIAMETER | 0.510 INCHES NOMINAL SECOND SHOULDER |
| SHOULDER LENGTH | 0.006 INCHES NOMINAL FIRST SHOULDER |
| SHOULDER LENGTH | 0.026 INCHES NOMINAL SECOND SHOULDER |
| SHOULDER SHAPE | ROUND ALL SHOULDERS |
| WIDTH BETWEEN FLATS | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
| SUPPLEMENTARY FEATURES | THIS PART MEETS THE Y REQUIREMENTS DUE TO CRITICAL FEATURES, TOLERANCES, FIT RESTRICTIONS, MATERIAL PROPERTIES AND MANUFACTURING PROCESS. FAILURE COULD RESULT IN LOSS OR SUBSTANTIAL DAMAGE TO WEAPON SYSTEM, DEATH OR SERIOUS INJURY |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.425 INCHES MINIMUM AND 0.431 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNF |