| HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM |
| OVERALL LENGTH | 3.620 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-46172 MIL SPEC 1ST MATERIAL RESPONSE OR ASTM A304 ASSN STD 2ND MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 1340H OR STEEL COMP 4140H OR STEEL COMP 4340H OR STEEL COMP 8640H |
| NOMINAL THREAD SIZE | 0.500 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.500 INCHES STUD THREAD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-83488 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-8837 TY 2,CL 3 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ALUMINUM AND CHROMATE OR CADMIUM OVERALL |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD CLASS | 3A NUT THREAD |
| THREAD CLASS | 3A STUD THREAD |
| THREAD LENGTH | 0.500 INCHES MINIMUM STUD THREAD |
| THREAD LENGTH | 1.380 INCHES NOMINAL NUT THREAD |
| THREAD SERIES DESIGNATOR | UNRC STUD THREAD |
| THREAD SERIES DESIGNATOR | UNRF NUT THREAD |
| THREAD QUANTITY PER INCH | 13 STUD THREAD |
| THREAD QUANTITY PER INCH | 20 NUT THREAD |