| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM |
| OVERALL LENGTH | 1.750 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A322 ASSN STD ALL MATERIAL RESPONSES OR ASTM A331 ASSN STD ALL MATERIAL RESPONSES |
| MATERIAL | STEEL COMP 8640 OR STEEL COMP 4140 |
| NOMINAL THREAD SIZE | 0.500 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.500 INCHES STUD THREAD |
| SPECIAL FEATURES | 0.140 IN. DIA NYLON PROJECTION TO ACCOMMODATE STUD USAGE |
| SURFACE TREATMENT | PHOSPHATE OVERALL |
| THREAD CLASS | 3A NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.810 INCHES MINIMUM STUD THREAD |
| THREAD LENGTH | 0.620 INCHES NOMINAL NUT THREAD |
| THREAD QUANTITY PER INCH | 13 STUD THREAD |
| THREAD QUANTITY PER INCH | 13 NUT THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) NUT THREAD |
| THREAD PITCH DIAMETERS | +0.4529 TO 0.4549 INCHES STUD THREAD |
| THREAD SERIES DESIGNATOR | UNS STUD THREAD |