| FASTENER LENGTH | 3.500 INCHES NOMINAL |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.902 INCHES MINIMUM AND 0.974 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE J429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 1.500 INCHES |
| WIDTH BETWEEN FLATS | 2.175 INCHES MINIMUM AND 2.250 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM F1941, ZINC COATING FE/ZN, TYPE 5C ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 3.250 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 6 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |