| FASTENER LENGTH | 2.250 INCHES NOMINAL |
| HARDNESS RATING | 95.0 ROCKWELL B NOMINAL OVERALL |
| HEAD DIAMETER | 1.032 INCHES MINIMUM AND 1.094 INCHES MAXIMUM |
| HEAD HEIGHT | 0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
| HEAD STYLE | BUTTON |
| MATERIAL | STEEL OVERALL |
| MINIMUM TENSILE STRENGTH | 55000 POUNDS PER SQUARE INCH |
| MINIMUM YIELD STRENGTH | 29000 POUNDS PER SQUARE INCH |
| NECK LENGTH | 0.250 INCHES MINIMUM AND 0.281 INCHES MAXIMUM |
| NECK WIDTH | 0.492 INCHES MINIMUM AND 0.515 INCHES MAXIMUM |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 1 STYLE |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.250 INCHES MINIMUM |
| THREAD QUANTITY PER INCH | 13 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |