| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| OVERALL LENGTH | 1.580 INCHES MINIMUM AND 1.610 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 4340 OR STEEL COMP 4140 |
| NOMINAL THREAD SIZE | 0.375 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.438 INCHES STUD THREAD |
| SHANK DIAMETER | 0.345 INCHES MINIMUM AND 0.350 INCHES MAXIMUM |
| STYLE DESIGNATOR | STEPPED |
| SPECIAL FEATURES | STUD END THDS MUST BE TAPERED 0.002-0.003 PER IN. ON ROOT DIA |
| SURFACE FINISH | 63.0 MICROINCHES NUT THD |
| SURFACE FINISH | 63.0 MICROINCHES STUD THD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 2A STUD THREAD |
| THREAD CLASS | 3A NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.800 INCHES MINIMUM AND 0.810 INCHES MAXIMUM STUD THREAD |
| THREAD LENGTH | 0.580 INCHES MINIMUM NUT THREAD |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| THREAD QUANTITY PER INCH | 14 STUD THREAD |
| THREAD QUANTITY PER INCH | 24 NUT THREAD |