| CARBON RELIEF GROOVE | NOT INCLUDED |
| DISTANCE FROM GROOVE TO STEM END | 0.2230 INCHES MINIMUM AND 0.2330 INCHES MAXIMUM |
| FSC APPLICATION DATA | ACFT ENG R2800 |
| GROOVE DIAMETER | 0.5660 INCHES MINIMUM AND 0.5700 INCHES MAXIMUM |
| GROOVE WIDTH | 0.1865 INCHES MINIMUM AND 0.1885 INCHES MAXIMUM |
| HEAD HEIGHT | 0.4860 INCHES MINIMUM AND 0.5160 INCHES MAXIMUM |
| HEAD STYLE | MUSHROOM |
| METALLIC HARDNESS RATING AND LOCATION | 350.0 VICKERS OR FIRTH DIAMOND PYRAMID NOMINAL STEM |
| METALLIC HARDNESS RATING AND LOCATION | 69.0 ROCKWELL SUPERFICIAL 30-N NOMINAL TIP |
| NECK RADIUS | 0.8750 INCHES NOMINAL |
| OUTSIDE DIAMETER | 2.5680 INCHES MINIMUM AND 2.5980 INCHES MAXIMUM |
| SEAT ANGLE IN DEG | 45.0 |
| STEM DIAMETER | 0.6665 INCHES MINIMUM AND 0.6675 INCHES MAXIMUM |
| STEM LENGTH | 5.6070 INCHES MINIMUM AND 5.6370 INCHES MAXIMUM |
| STEM STYLE | GROOVED |