| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE |
| OVERALL LENGTH | 1.312 INCHES NOMINAL |
| MATERIAL | STEEL COMP 8740 |
| NOMINAL THREAD SIZE | 0.312 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.312 INCHES STUD THREAD |
| SPECIAL FEATURES | SHANK DIA. 0.279 IN. MIN.,0.289 IN. MAX. |
| SURFACE FINISH | 32.0 MICROINCHES NUT THD |
| SURFACE FINISH | 32.0 MICROINCHES STUD THD |
| SURFACE FINISH | 63.0 MICROINCHES SHANK |
| 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 | 0.583 INCHES NOMINAL NUT THREAD |
| THREAD LENGTH | 0.736 INCHES NOMINAL STUD THREAD |
| THREAD PITCH DIAMETERS | +0.2810 TO 0.2825 INCHES STUD THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) NUT THREAD |
| THREAD SERIES DESIGNATOR | UNJS STUD THREAD |
| THREAD QUANTITY PER INCH | 18 STUD THREAD |
| THREAD QUANTITY PER INCH | 24 NUT THREAD |