| FASTENER LENGTH | 0.7155 INCHES NOMINAL |
| GRIP LENGTH | 0.3125 INCHES NOMINAL |
| GRIP DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| HEAD DIAMETER | 0.477 INCHES MINIMUM AND 0.492 INCHES MAXIMUM |
| HEAD HEIGHT | 0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM |
| HEAD STYLE | PAN NO. 2 |
| INTERNAL DRIVE STYLE | HIGH-TORQUE |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5732 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5737 ASSN STD 3RD MATERIAL RESPONSE OR AMS 5853 ASSN STD 4TH MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SPECIFICATION/STANDARD DATA | 80205-NAS1578 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2700, METHOD 1, CLASS 4 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.403 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD QUANTITY PER INCH | 28 |