| FIRST END LOCATION | UNTHREADED END |
| FIRST END STYLE | CHAMFERED |
| FIRST END TAPER ANGLE | 15.0 DEGREES MINIMUM AND 25.0 DEGREES MAXIMUM |
| FIRST END TAPER LENGTH | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM |
| OVERALL LENGTH | 1.270 INCHES MINIMUM AND 1.310 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 8740 OVERALL |
| NOMINAL THREAD SIZE | 0.3125 INCHES |
| SHOULDER WIDTH ACROSS FLATS | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
| SECOND END STYLE | CHAMFERED |
| SECOND END TAPER ANGLE | 30.0 DEGREES MINIMUM AND 60.0 DEGREES MAXIMUM |
| SECOND END TAPER LENGTH | 0.030 INCHES MINIMUM AND 0.060 INCHES MAXIMUM |
| SECOND END RELATIONSHIP WITH FIRST END | NOT IDENTICAL |
| SECOND SHANK DIAMETER | 0.312 INCHES NOMINAL |
| SECOND SHANK LENGTH | 0.531 INCHES NOMINAL |
| SHANK DIAMETER | 0.306 INCHES MINIMUM AND 0.308 INCHES MAXIMUM |
| SHANK LENGTH | 0.477 INCHES NOMINAL |
| UNDERCUT DIAMETER | 0.205 INCHES MINIMUM AND 0.225 INCHES MAXIMUM |
| UNDERCUT WIDTH | 0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM |
| STYLE DESIGNATOR | UNDERCUT |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.531 INCHES NOMINAL |
| THREAD PITCH DIAMETERS | +0.2810 TO 0.2825 INCHES |
| THREAD SERIES DESIGNATOR | UNS |
| THREAD QUANTITY PER INCH | 18 |