| FASTENER LENGTH | 1.440 INCHES MINIMUM AND 1.500 INCHES MAXIMUM | 
| HARDNESS RATING | 38.0 ROCKWELL C MINIMUM OVERALL AND 45.0 ROCKWELL C MAXIMUM OVERALL | 
| HEAD DIAMETER | 0.921 INCHES MINIMUM AND 0.938 INCHES MAXIMUM | 
| HEAD HEIGHT | 0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM | 
| HEAD STYLE | FLAT CHAMFER | 
| INTERNAL DRIVE STYLE | HEXAGON | 
| LOCKING FEATURE | STRIP THREADS OR PATCH THREADS OR PELLET THREADS | 
| MATERIAL | STEEL OVERALL | 
| PROPRIETARY CHARACTERISTICS | PACS | 
| MINIMUM TENSILE STRENGTH | 170000 POUNDS PER SQUARE INCH | 
| MINIMUM YIELD STRENGTH | 150000 POUNDS PER SQUARE INCH | 
| NOMINAL THREAD DIAMETER | 0.625 INCHES | 
| WIDTH ACROSS FLATS | 0.500 INCHES NOMINAL | 
| SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD | 
| SURFACE FINISH | 32.0 MICROINCHES THREADS | 
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | 
| SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL | 
| THREAD CLASS | 3A | 
| THREAD DIRECTION | RIGHT-HAND | 
| THREAD LENGTH | 1.329 INCHES MINIMUM AND 1.500 INCHES MAXIMUM | 
| THREAD QUANTITY PER INCH | 18 | 
| THREAD SERIES DESIGNATOR | UNF |