| DISTANCE ACROSS FLATS | 0.630 INCHES NOMINAL |
| OVERALL LENGTH | 1.940 INCHES MINIMUM AND 2.060 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-637 FED SPEC ALL MATERIAL RESPONSES |
| MATERIAL | COPPER ALLOY 462 OR COPPER ALLOY 464 |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.250 INCHES STUD THREAD |
| SHOULDER LENGTH | 0.310 INCHES NOMINAL |
| SPECIAL FEATURES | CHAMFER BOTH ENDS 0.060 IN. LG BY 45 DEG |
| STYLE DESIGNATOR | SHOULDERED |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-T-10727 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | TIN 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 | 0.790 INCHES NOMINAL STUD THREAD |
| THREAD LENGTH | 1.000 INCHES NOMINAL NUT THREAD |
| THREAD QUANTITY PER INCH | 20 NUT THREAD |
| THREAD QUANTITY PER INCH | 20 STUD THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) NUT THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |