| THREAD CLASS | 3A NUT THREAD |
| THREAD CLASS | 3A STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A331 ASSN STD SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 8640 |
| NOMINAL THREAD SIZE | 0.375 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.375 INCHES STUD THREAD |
| SPECIAL FEATURES | HEX SECTION HAS WASHER FACE TOWARD NUT END |
| THREAD LENGTH | 1.000 INCHES MINIMUM NUT THREAD |
| THREAD LENGTH | 0.688 INCHES MINIMUM STUD THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) NUT THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| THREAD QUANTITY PER INCH | 16 NUT THREAD |
| THREAD QUANTITY PER INCH | 16 STUD THREAD |