| DISTANCE ACROSS FLATS | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM |
| OVERALL LENGTH | 2.170 INCHES MINIMUM AND 2.190 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL |
| NOMINAL THREAD SIZE | 0.500 INCHES STUD THREAD |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD B |
| SHOULDER LENGTH | 0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM |
| SPECIAL FEATURES | SMALL END HAS SLOTTED INTERNAL DRIVE |
| STYLE DESIGNATOR | SHOULDERED AND STEPPED |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TYPE 11 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 2A NUT THREAD B |
| THREAD CLASS | 2A STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD B |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM NUT THREAD B |
| THREAD LENGTH | 2.370 INCHES MINIMUM AND 2.390 INCHES MAXIMUM STUD THREAD |
| THREAD QUANTITY PER INCH | 20 NUT THREAD B |
| THREAD QUANTITY PER INCH | 20 STUD THREAD |
| THREAD SERIES DESIGNATOR | UNF NUT THREAD B |
| THREAD SERIES DESIGNATOR | UNF STUD THREAD |