| HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| OVERALL LENGTH | 1.396 INCHES MINIMUM AND 1.406 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 8740 OR STEEL COMP 4340 OR STEEL COMP 4140 |
| NOMINAL THREAD SIZE | 0.375 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.375 INCHES STUD THREAD |
| 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 | 0.405 INCHES MINIMUM AND 0.425 INCHES MAXIMUM NUT THREAD |
| THREAD LENGTH | 0.662 INCHES MINIMUM AND 0.682 INCHES MAXIMUM STUD THREAD |
| THREAD PITCH DIAMETERS | +0.3422 TO 0.3437 INCHES STUD THREAD |
| THREAD QUANTITY PER INCH | 16 STUD THREAD |
| THREAD QUANTITY PER INCH | 24 NUT THREAD |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| THREAD SERIES DESIGNATOR | UNS STUD THREAD |