| CARBON RELIEF GROOVE | NOT INCLUDED |
| CHAMFER ANGLE IN DEG | 35.0 |
| CHAMFER LENGTH | 0.0300 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 | 0.1600 INCHES NOMINAL |
| HEAD STYLE | INVERTED CONE |
| METALLIC HARDNESS RATING AND LOCATION | 35.0 ROCKWELL C MINIMUM STEM |
| METALLIC HARDNESS RATING AND LOCATION | 45.0 ROCKWELL C MAXIMUM STEM |
| MINOR DIAMETER LENGTH | 0.1900 INCHES NOMINAL |
| MINOR OUTSIDE DIAMETER | 0.2450 INCHES MINIMUM AND 0.2490 INCHES MAXIMUM |
| NECK RADIUS | 0.3200 INCHES NOMINAL |
| OUTSIDE DIAMETER | 1.5050 INCHES MINIMUM AND 1.5150 INCHES MAXIMUM |
| SEAT ANGLE IN DEG | 44.6 |
| STEM DIAMETER | 0.3440 INCHES MINIMUM AND 0.3450 INCHES MAXIMUM |
| STEM LENGTH | 4.9750 INCHES MINIMUM AND 4.9900 INCHES MAXIMUM |
| STEM STYLE | TAPERED |
| TAPER ANGLE IN DEG | 15.0 |