| DISTANCE ACROSS FLATS | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM |
| OVERALL LENGTH | 3.020 INCHES MINIMUM AND 3.100 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 FED SPEC 3RD MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 4130 OR STEEL COMP 4140 |
| NOMINAL THREAD SIZE | 0.625 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.750 INCHES STUD THREAD |
| NUT END SHANK DIAMETER | 0.620 INCHES MINIMUM AND 0.640 INCHES MAXIMUM |
| NUT END SHANK LENGTH | 0.100 INCHES MINIMUM AND 0.140 INCHES MAXIMUM |
| SHOULDER LENGTH | 1.590 INCHES NOMINAL |
| STYLE DESIGNATOR | SHOULDERED AND STEPPED |
| SURFACE FINISH | 125.0 MICROINCHES OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |
| THREAD CLASS | 2A NUT THREAD |
| THREAD CLASS | 2A STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.380 INCHES NOMINAL STUD THREAD |
| THREAD LENGTH | 0.850 INCHES NOMINAL NUT THREAD |
| THREAD SERIES DESIGNATOR | UNF STUD THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) NUT THREAD |
| THREAD QUANTITY PER INCH | 11 NUT THREAD |
| THREAD QUANTITY PER INCH | 16 STUD THREAD |