| CARBON RELIEF GROOVE | NOT INCLUDED |
| CHAMFER ANGLE IN DEG | 45.0 |
| CHAMFER LENGTH | 0.0312 INCHES NOMINAL |
| DISTANCE FROM GROOVE TO STEM END | 0.2812 INCHES NOMINAL |
| FSC APPLICATION DATA | GASOLINE ENGINE |
| GROOVE DIAMETER | 0.2670 INCHES MINIMUM AND 0.2730 INCHES MAXIMUM |
| GROOVE WIDTH | 0.0950 INCHES MINIMUM AND 0.1050 INCHES MAXIMUM |
| HEAD HEIGHT | 0.1562 INCHES NOMINAL |
| HEAD STYLE | FLAT |
| OUTSIDE DIAMETER | 1.3700 INCHES MINIMUM AND 1.3800 INCHES MAXIMUM |
| METALLIC HARDNESS RATING AND LOCATION | 40.0 ROCKWELL C MINIMUM STEM |
| METALLIC HARDNESS RATING AND LOCATION | 41.0 ROCKWELL C MINIMUM TIP |
| METALLIC HARDNESS RATING AND LOCATION | 45.0 ROCKWELL C MAXIMUM STEM |
| NECK RADIUS | 0.3125 INCHES NOMINAL |
| SEAT ANGLE IN DEG | 45.0 |
| STEM DIAMETER | 0.3105 INCHES MINIMUM AND 0.3110 INCHES MAXIMUM |
| STEM LENGTH | 3.9738 INCHES MINIMUM AND 3.9838 INCHES MAXIMUM |
| STEM STYLE | GROOVED |