| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM |
| OVERALL LENGTH | 1.420 INCHES MINIMUM AND 1.440 INCHES MAXIMUM |
| MATERIAL | STEEL |
| NOMINAL THREAD SIZE | 0.375 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.375 INCHES STUD THREAD |
| SPECIAL FEATURES | 0.316 IN. DIA UNTHREADED PORTION |
| SURFACE FINISH | 63.0 MICROINCHES OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3A NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.640 INCHES MINIMUM AND 0.660 INCHES MAXIMUM NUT THREAD |
| THREAD LENGTH | 0.680 INCHES MINIMUM AND 0.700 INCHES MAXIMUM STUD THREAD |
| THREAD PITCH DIAMETERS | +0.3344 TO 0.3403 INCHES STUD THREAD |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| THREAD QUANTITY PER INCH | 16 STUD THREAD |
| THREAD QUANTITY PER INCH | 24 NUT THREAD |