| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS6320 ASSN STD 1ST MATERIAL RESPONSE OR AMS6322 ASSN STD 2ND MATERIAL RESPONSE OR AMS6324 ASSN STD 2ND MATERIAL RESPONSE |
| OVERALL LENGTH | 3.312 INCHES NOMINAL |
| MATERIAL | STEEL COMP 8735 OR STEEL COMP 8740 |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.312 INCHES STUD THREAD |
| SHANK DIAMETER | 0.250 INCHES NOMINAL |
| SPECIAL FEATURES | OPTIONAL 0.047 CENTER DRILL 0.100 MAX. DIA. BOTH ENDS |
| STYLE DESIGNATOR | STEPPED |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MS2400 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 | 0.500 INCHES NOMINAL NUT THREAD |
| THREAD LENGTH | 0.500 INCHES NOMINAL STUD THREAD |
| THREAD PITCH DIAMETERS | +0.2779 TO 0.2794 INCHES STUD THREAD |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| THREAD SERIES DESIGNATOR | UNS STUD THREAD |