| FASTENER LENGTH | 1.250 INCHES NOMINAL |
| HARDNESS RATING | 24.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL |
| 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 |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN LOCKING FEATURE |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | NICKEL ALLOY 500 OVERALL |
| MINIMUM YIELD STRENGTH | 90000 POUNDS PER SQUARE INCH |
| MINIMUM TENSILE STRENGTH | 130000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.750 INCHES |
| SPECIFICATION/STANDARD DATA | 81349-MIL-DTL--1222 GOVERNMENT SPECIFICATION |
| THREAD LENGTH | 0.250 INCHES NOMINAL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 10 |
| WIDTH ACROSS FLATS | 0.625 INCHES NOMINAL |