| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 8740 |
| NOMINAL THREAD SIZE | 0.312 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 | 0.625 INCHES MINIMUM NUT THREAD |
| THREAD LENGTH | 0.750 INCHES MAXIMUM STUD THREAD |
| THREAD PITCH DIAMETERS | +0.3422 TO 0.3437 INCHES STUD THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) NUT THREAD |
| THREAD QUANTITY PER INCH | 16 STUD THREAD |
| THREAD QUANTITY PER INCH | 24 NUT THREAD |