| FASTENER LENGTH | 1.350 INCHES NOMINAL |
| GRIP LENGTH | 0.963 INCHES MINIMUM AND 0.993 INCHES MAXIMUM |
| HARDNESS RATING | 255.0 BRINELL STANDARD MINIMUM AND 321.0 BRINELL STANDARD MAXIMUM OVERALL |
| HEAD HEIGHT | 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | BS S80 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| MINIMUM TENSILE STRENGTH | 127680 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| WIDTH BETWEEN FLATS | 0.307 INCHES MINIMUM AND 0.312 INCHES MAXIMUM |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.357 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNC |