| CROSS-SECTIONAL SHAPE | ROUND |
| DIAMETER | 0.220 INCHES MINIMUM AND 0.280 INCHES MAXIMUM |
| LENGTH | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-626, 1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | COPPER ALLOY 360 OVERALL |
| NOMINAL THREAD SIZE | 0.138 INCHES RIGHT INTERNAL |
| RIGHT PROJECTION DIAMETER | 0.185 INCHES MINIMUM AND 0.189 INCHES MAXIMUM |
| RIGHT PROJECTION LENGTH | 0.132 INCHES MINIMUM AND 0.138 INCHES MAXIMUM |
| STYLE DESIGNATOR | PROJECTION ONE END |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-T-10727, TYPE I MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | TIN OVERALL |
| THREAD CLASS | 2B RIGHT INTERNAL |
| THREAD DIRECTION | RIGHT-HAND RIGHT INTERNAL |
| THREAD LENGTH | 0.250 INCHES NOMINAL RIGHT INTERNAL |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) RIGHT INTERNAL |
| THREAD QUANTITY PER INCH | 32 RIGHT INTERNAL |