| FASTENER LENGTH | 2.641 INCHES MINIMUM AND 2.688 INCHES MAXIMUM |
| FEATURES PROVIDED | FINISHED HEAD |
| GRIP LENGTH | 1.547 INCHES MINIMUM AND 1.578 INCHES MAXIMUM |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.390 INCHES MINIMUM AND 0.422 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL | STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL |
| MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.750 INCHES |
| WIDTH BETWEEN FLATS | 1.053 INCHES MINIMUM AND 1.066 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ P 416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.063 INCHES MINIMUM AND 1.141 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 16 |
| THREAD SERIES DESIGNATOR | UNF |