| FASTENER LENGTH | 0.4890 INCHES NOMINAL |
| HEAD DIAMETER | 0.3060 INCHES MINIMUM AND 0.3220 INCHES MAXIMUM |
| HEAD HEIGHT | 0.1050 INCHES MINIMUM AND 0.1150 INCHES MAXIMUM |
| HEAD STYLE | PAN |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,MACHINE-PAN HEAD,STRUCTURAL,CROSS RECESSED |
| NOMINAL THREAD DIAMETER | 0.1640 INCHES |
| SCREW MATERIAL | STEEL CORROSION RESISTING |
| SPECIFICATION/STANDARD DATA | 80205-NAS-27039 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.4570 INCHES MINIMUM AND 0.4890 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |