| CARBON RELIEF GROOVE | NOT INCLUDED |
| CHAMFER ANGLE IN DEG | 45.0 |
| CHAMFER LENGTH | 0.0312 INCHES NOMINAL |
| DISTANCE FROM MINOR DIAMETER TO STEM END | 0.2010 INCHES MINIMUM AND 0.2030 INCHES MAXIMUM |
| FSC APPLICATION DATA | GASOLINE ENGINE |
| HEAD HEIGHT | 0.2500 INCHES NOMINAL |
| HEAD STYLE | MUSHROOM |
| METALLIC HARDNESS RATING AND LOCATION | 30.0 ROCKWELL C MINIMUM STEM |
| METALLIC HARDNESS RATING AND LOCATION | 40.0 ROCKWELL C MAXIMUM STEM |
| METALLIC HARDNESS RATING AND LOCATION | 50.0 ROCKWELL C MINIMUM TIP |
| MINOR DIAMETER LENGTH | 0.1875 INCHES NOMINAL |
| MINOR OUTSIDE DIAMETER | 0.3380 INCHES MINIMUM AND 0.3420 INCHES MAXIMUM |
| NECK RADIUS | 0.3750 INCHES NOMINAL |
| OUTSIDE DIAMETER | 1.9900 INCHES MINIMUM AND 2.0100 INCHES MAXIMUM |
| SEAT ANGLE IN DEG | 45.0 |
| STEM DIAMETER | 0.4955 INCHES MINIMUM AND 0.4965 INCHES MAXIMUM |
| STEM LENGTH | 7.8437 INCHES NOMINAL |
| STEM STYLE | TAPERED |
| TAPER ANGLE IN DEG | 15.0 |