| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| OVERALL LENGTH | 1.230 INCHES MINIMUM AND 1.270 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 8740 OR STEEL COMP 4130 |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| SHANK DIAMETER | 0.223 INCHES MINIMUM AND 0.227 INCHES MAXIMUM |
| STYLE DESIGNATOR | STEPPED |
| SPECIAL FEATURES | STUD END THREAD 0.003 IN OVERSIZE |
| SURFACE FINISH | 100.0 MICROINCHES NUT THD |
| SURFACE FINISH | 40.0 MICROINCHES STUD THD |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.430 INCHES MINIMUM STUD THREAD |
| THREAD LENGTH | 0.540 INCHES MINIMUM NUT THREAD |
| THREAD PITCH DIAMETERS | +0.2246 TO 0.2263 INCHES NUT THREAD |
| THREAD PITCH DIAMETERS | +0.2847 TO 0.2857 INCHES STUD THREAD |
| THREAD SERIES DESIGNATOR | UNS NUT THREAD |
| THREAD QUANTITY PER INCH | 28 NUT THREAD |