| CHAMFER ANGLE | 30.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM |
| COLOR | BLACK OVERALL |
| FASTENER LENGTH | 0.4375 INCHES NOMINAL |
| HEAD DIAMETER | 0.176 INCHES MINIMUM AND 0.183 INCHES MAXIMUM |
| HEAD HEIGHT | 0.108 INCHES MINIMUM AND 0.112 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 (UNS S66286)OR AMS 5737 (UNS S66286) AEROSPACE MATERIAL SPEC 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 HEA-RESISTANT STEEL, UNRC-3A AND UNRC-2A |
| MATERIAL | IRON ALLOY 660 OVERALL |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.112 INCHES |
| SPECIAL FEATURES | MINIMUM BREAKING STRENGTH, 780 LBF |
| SPECIFICATION/STANDARD DATA | 80205-NAS1352 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-DTL-13924, CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.4375 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 40 |
| THREAD SERIES DESIGNATOR | UNRC |
| WIDTH ACROSS FLATS | 0.094 INCHES NOMINAL |