| CHAMFER ANGLE | 30.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.980 INCHES MINIMUM AND 1.000 INCHES MAXIMUM |
| HEAD DIAMETER | 0.357 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| HEAD HEIGHT | 0.177 INCHES MINIMUM AND 0.188 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | NICKEL ALLOY AND COPPER ALLOY OVERALL |
| NOMINAL THREAD DIAMETER | 0.1900 INCHES |
| SHOULDER DIAMETER | 0.2460 INCHES MINIMUM AND 0.2480 INCHES MAXIMUM OVERALL |
| SHOULDER LENGTH | 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM OVERALL |
| SHOULDER SHAPE | ROUND OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,SHOULDER,SOCKET HEAD,HEXAGON ALLOY STEEL OR NONFERROUS ALLOYS,UNC-3A |
| SPECIAL FEATURES | TENSILE STRENGTH LBF IS 1,110; DOUBLE SHEAR STRENGTH LBF IS 4,750 |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH ACROSS FLATS | 0.125 INCHES NOMINAL |
| SPECIFICATION/STANDARD DATA | 80205-NAS-51975 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.355 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |