| CHAMFER ANGLE | 30.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 3.25 INCHES NOMINAL |
| HEAD DIAMETER | 1.107 INCHES MINIMUM AND 1.125 INCHES MAXIMUM |
| HEAD HEIGHT | 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5731(UNS S66286) OR AMS5737(UNS S66286) COLD WORKED AND AGE HARDENED TO MEET FASTENER REQUIREMENTS OF FF-S-86 AND NAS1352 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,CAP,SOCKET HEAD,UNDRILLED AND DRILLED,PLAIN AND SELF-LOCKING,ALLOY STEEL,CORROSION-RESISTANT STEEL AND HEAT-RESISTANT STEEL,UNRC-3A AND UNRC-2A |
| MATERIAL | IRON ALLOY 660 OVERALL |
| NOMINAL THREAD DIAMETER | 0.7500 INCHES |
| SPECIFICATION/STANDARD DATA | 80205-NAS1352 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS2700,METHOD 1,TYPE 2 OR 8,CLASS 4 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 2.00 INCHES MINIMUM |
| THREAD QUANTITY PER INCH | 10 |
| THREAD SERIES DESIGNATOR | UNRC |
| WIDTH ACROSS FLATS | 0.625 INCHES NOMINAL |