| DIAMETER | 0.311 INCHES NOMINAL0.311 INCHES NOMINAL |
| FIRST END COUNTERBORE DEPTH | 0.156 INCHES MINIMUM AND 0.156 INCHES MINIMUM AND 0.166 INCHES MAXIMUM0.166 INCHES MAXIMUM |
| FIRST END COUNTERBORE DIAMETER | 0.156 INCHES MINIMUM AND 0.156 INCHES MINIMUM AND 0.161 INCHES MAXIMUM0.161 INCHES MAXIMUM |
| FIRST END STYLE | COUNTERBORED W/O THRU HOLECOUNTERBORED W/O THRU HOLE |
| HEAD STYLE | FLATFLAT |
| HEIGHT | 0.062 INCHES NOMINAL0.062 INCHES NOMINAL |
| INTERNAL DRIVE STYLE | TORQUETORQUE |
| PIN HEAD DIAMETER | 0.375 INCHES NOMINAL0.375 INCHES NOMINAL |
| STYLE DESIGNATOR | GROOVEGROOVE |
| UNDER HEAD LENGTH | 2.656 INCHES MINIMUM2.656 INCHES MINIMUM |
| UNDERCUT WIDTH | 0.031 INCHES NOMINAL0.031 INCHES NOMINAL |
| UNDERCUT DIAMETER | 0.280 INCHES NOMINAL0.280 INCHES NOMINAL |