| DIAMETER | 0.1248 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM |
| DISTANCE FROM CENTERLINE TO FLAT | 0.063 INCHES MINIMUM AND 0.068 INCHES MAXIMUM |
| EFFECTIVE LENGTH | 0.767 INCHES MINIMUM AND 0.783 INCHES MAXIMUM |
| FIRST END STYLE | SQUARE |
| HEAD STYLE | DEE CHAMFER |
| HEIGHT | 0.046 INCHES MINIMUM AND 0.056 INCHES MAXIMUM |
| PIN HEAD DIAMETER | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM |
| SECOND UNDERCUT DIAMETER | 0.115 INCHES MINIMUM AND 0.120 INCHES MAXIMUM |
| SECOND UNDERCUT WIDTH | 0.040 INCHES MAXIMUM |
| STYLE DESIGNATOR | GROOVE |
| UNDER HEAD LENGTH | 0.835 INCHES MINIMUM AND 0.845 INCHES MAXIMUM |
| UNDERCUT DIAMETER | 0.074 INCHES MINIMUM AND 0.076 INCHES MAXIMUM |
| UNDERCUT WIDTH | 0.017 INCHES MINIMUM AND 0.023 INCHES MAXIMUM |