| EFFECTIVE LENGTH | 0.541 INCHES MINIMUM AND 0.551 INCHES MAXIMUM |
| DIAMETER | 0.190 INCHES MINIMUM AND 0.191 INCHES MAXIMUM |
| HARDNESS RATING | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD STYLE | FLAT |
| HEIGHT | 0.021 INCHES MINIMUM AND 0.036 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| PIN HEAD DIAMETER | 0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM |
| STYLE DESIGNATOR | GROOVE |
| UNDER HEAD LENGTH | 0.590 INCHES MINIMUM AND 0.600 INCHES MAXIMUM |
| UNDERCUT DIAMETER | 0.164 INCHES MINIMUM AND 0.167 INCHES MAXIMUM |
| UNDERCUT WIDTH | 0.018 INCHES MINIMUM AND 0.020 INCHES MAXIMUM |