| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| OVERALL LENGTH | 1.468 INCHES MINIMUM AND 1.531 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD ALL MATERIAL RESPONSES |
| MATERIAL | STEEL COMP 8740 OR STEEL COMP 8742 OR STEEL COMP 8637H OR STEEL COMP 8642 OR STEEL COMP 4140 |
| NOMINAL THREAD SIZE | 0.438 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.438 INCHES STUD THREAD |
| SPECIAL FEATURES | STUD END THREAD 0.006 IN. OVERSIZE |
| THREAD CLASS | 2A NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.750 INCHES MINIMUM STUD THREAD |
| THREAD LENGTH | 0.625 INCHES MINIMUM NUT THREAD |
| THREAD PITCH DIAMETERS | +0.4001 TO 0.4017 INCHES STUD THREAD |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| THREAD SERIES DESIGNATOR | UNS STUD THREAD |
| THREAD QUANTITY PER INCH | 14 STUD THREAD |
| THREAD QUANTITY PER INCH | 20 NUT THREAD |