| DISTANCE ACROSS FLATS | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| OVERALL LENGTH | 3.758 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758,COND C4 MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 4130 |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.250 INCHES STUD THREAD |
| NUT END SHANK DIAMETER | 0.246 INCHES MINIMUM AND 0.249 INCHES MAXIMUM |
| NUT END SHANK LENGTH | 1.330 INCHES NOMINAL |
| SHOULDER LENGTH | 0.188 INCHES NOMINAL |
| STUD END SHANK DIAMETER | 0.309 INCHES MINIMUM AND 0.312 INCHES MAXIMUM |
| STUD END SHANK LENGTH | 0.400 INCHES NOMINAL |
| STYLE DESIGNATOR | SHOULDERED |
| SURFACE FINISH | 125.0 MICROINCHES OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3A NUT THREAD |
| THREAD CLASS | 3A STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.390 INCHES NOMINAL STUD THREAD |
| THREAD LENGTH | 0.420 INCHES NOMINAL NUT THREAD |
| THREAD QUANTITY PER INCH | 28 NUT THREAD |
| THREAD QUANTITY PER INCH | 28 STUD THREAD |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD |
| THREAD SERIES DESIGNATOR | UNF STUD THREAD |