| DIAMETER OF RECESSED PORTION OF SHANK | 0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM |
| HARDNESS RATING | 27.0 ROCKWELL C MINIMUM AND 31.0 ROCKWELL C MAXIMUM |
| LENGTH OF RECESSED PORTION OF SHANK | 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM |
| OVERALL LENGTH | 0.812 INCHES NOMINAL |
| MATERIAL | STEEL |
| NOMINAL THREAD SIZE | 0.190 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.190 INCHES STUD THREAD |
| SPECIAL FEATURES | LOCKING KEY,STEEL AMS5688,0.250 IN. LG,0.070 IN. H,LOCATED OVER PORTION OF RECESS |
| STYLE DESIGNATOR | RECESSED |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD CLASS | 3A NUT THREAD |
| THREAD CLASS | 3A STUD THREAD |
| THREAD LENGTH | 0.440 INCHES MINIMUM AND 0.480 INCHES MAXIMUM STUD THREAD |
| THREAD LENGTH | 0.322 INCHES NOMINAL NUT THREAD |
| THREAD SERIES DESIGNATOR | UNJC STUD THREAD |
| THREAD SERIES DESIGNATOR | UNJF NUT THREAD |
| THREAD QUANTITY PER INCH | 24 STUD THREAD |
| THREAD QUANTITY PER INCH | 32 NUT THREAD |