| CARBON RELIEF GROOVE | NOT INCLUDED |
| CHAMFER ANGLE IN DEG | 45.0 |
| CHAMFER LENGTH | 0.0262 INCHES MINIMUM AND 0.0362 INCHES MAXIMUM |
| DISTANCE FROM FIRST GROOVE TO STEM END | 0.2762 INCHES MINIMUM AND 0.2862 INCHES MAXIMUM |
| DISTANCE FROM SECOND GROOVE TO STEM END | 0.4322 INCHES MINIMUM AND 0.4422 INCHES MAXIMUM |
| FIRST GROOVE DIAMETER | 0.3010 INCHES MINIMUM AND 0.3070 INCHES MAXIMUM |
| FIRST GROOVE WIDTH | 0.0625 INCHES NOMINAL |
| FSC APPLICATION DATA | GASOLINE ENGINE |
| HEAD HEIGHT | 0.1981 INCHES MINIMUM AND 0.2081 INCHES MAXIMUM |
| HEAD STYLE | FLAT |
| METALLIC HARDNESS RATING AND LOCATION | 30.0 ROCKWELL C MAXIMUM HEAD |
| METALLIC HARDNESS RATING AND LOCATION | 28.0 ROCKWELL C MINIMUM HEAD |
| METALLIC HARDNESS RATING AND LOCATION | 37.0 ROCKWELL C NOMINAL STEM |
| NECK RADIUS | 0.4950 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 1.8700 INCHES MINIMUM AND 1.8880 INCHES MAXIMUM |
| SEAT ANGLE IN DEG | 30.0 |
| SECOND GROOVE DIAMETER | 0.3010 INCHES MINIMUM AND 0.3070 INCHES MAXIMUM |
| SECOND GROOVE WIDTH | 0.0625 INCHES NOMINAL |
| STEM DIAMETER | 0.3720 INCHES MINIMUM AND 0.3730 INCHES MAXIMUM |
| STEM LENGTH | 5.7450 INCHES MINIMUM AND 5.7550 INCHES MAXIMUM |
| STEM STYLE | DOUBLE GROOVED |