| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A304 ASSN STD ALL MATERIAL RESPONSES OR ASTM A322 ASSN STD ALL MATERIAL RESPONSES OR ASTM A331 ASSN STD ALL MATERIAL RESPONSES OR SAE ASSN STD ALL MATERIAL RESPONSES |
| MATERIAL | STEEL COMP 8740 OR STEEL COMP 8742 OR STEEL COMP 8640 OR STEEL COMP 8642 OR STEEL COMP 4140 |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 0.375 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.375 INCHES STUD THREAD |
| OVERALL LENGTH | 4.344 INCHES MINIMUM AND 4.406 INCHES MAXIMUM |
| THREAD CLASS | 2A NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.625 INCHES NOMINAL STUD THREAD |
| THREAD LENGTH | 0.688 INCHES NOMINAL NUT THREAD |
| THREAD PITCH DIAMETERS | +0.3432/+0.3446 INCHES STUD THREAD |
| THREAD QUANTITY PER INCH | 16 STUD THREAD |
| THREAD QUANTITY PER INCH | 24 NUT THREAD |
| THREAD SERIES DESIGNATOR | UNC STUD THREAD |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |