| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| OVERALL LENGTH | 1.390 INCHES MINIMUM AND 1.410 INCHES MAXIMUM |
| SECOND END STYLE | CHAMFERED |
| SECOND END TAPER ANGLE | 43.0 DEGREES MINIMUM AND 47.0 DEGREES MAXIMUM |
| SECOND END TAPER LENGTH | 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM |
| SECOND END RELATIONSHIP WITH FIRST END | NOT IDENTICAL |
| SECOND SHANK DIAMETER | 0.3109 INCHES MINIMUM AND 0.3115 INCHES MAXIMUM |
| SECOND SHANK LENGTH | 0.450 INCHES NOMINAL |
| SHANK DIAMETER | 0.2400 INCHES MINIMUM AND 0.2600 INCHES MAXIMUM |
| SHANK LENGTH | 0.640 INCHES MINIMUM AND 0.660 INCHES MAXIMUM |
| SHOULDER DIAMETER | 0.3910 INCHES MINIMUM AND 0.3914 INCHES MAXIMUM |
| STYLE DESIGNATOR | SHOULDER |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.640 INCHES MINIMUM AND 0.660 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNC |
| FIRST END LOCATION | THREADED END |
| FIRST END STYLE | SQUARE |
| MATERIAL DOCUMENT AND CLASSIFICATION | BS 1407 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |