| FASTENER LENGTH | 0.613 INCHES MINIMUM AND 0.643 INCHES MAXIMUM |
| HEAD DIAMETER | 0.477 INCHES MINIMUM AND 0.492 INCHES MAXIMUM |
| HEAD HEIGHT | 0.14 INCHES MINIMUM AND 0.15 INCHES MAXIMUM |
| HEAD STYLE | PAN |
| INTERNAL DRIVE STYLE | HIGH-TORQUE |
| MINIMUM YIELD STRENGTH | 4500 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.25 INCHES |
| SCREW MATERIAL | STEEL |
| SPECIFICATION/STANDARD DATA | 80205-NAS1218 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| THREAD LENGTH | 0.306 INCHES MINIMUM AND 0.326 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD FORMING METHOD | ROLLED |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |