| COLOR | BLUE OVERALL |
| FASTENER LENGTH | 0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL | STEEL OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,CAP,HEXAGON H |
| PROPRIETARY CHARACTERISTICS | PACS |
| MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| WIDTH BETWEEN FLATS | 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 TY 3 OR 4 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC AND CHROMATE OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.402 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 13 |
| THREAD SERIES DESIGNATOR | UNC |