| DISTANCE FROM SECOND GROOVE TO STEM END | 0.3938 INCHES MINIMUM AND 0.4038 INCHES MAXIMUM |
| CARBON RELIEF GROOVE | NOT INCLUDED |
| CHAMFER ANGLE IN DEG | 45.0 |
| CHAMFER LENGTH | 0.0312 INCHES NOMINAL |
| DISTANCE FROM FIRST GROOVE TO STEM END | 0.2378 INCHES MINIMUM AND 0.2478 INCHES MAXIMUM |
| FIRST GROOVE DIAMETER | 0.2400 INCHES MINIMUM AND 0.2460 INCHES MAXIMUM |
| FIRST GROOVE WIDTH | 0.0625 INCHES NOMINAL |
| FSC APPLICATION DATA | GASOLINE ENGINE |
| HEAD HEIGHT | 0.2110 INCHES MINIMUM AND 0.2310 INCHES MAXIMUM |
| HEAD STYLE | FLAT |
| OUTSIDE DIAMETER | 1.0420 INCHES MINIMUM AND 1.0520 INCHES MAXIMUM |
| METALLIC HARDNESS RATING AND LOCATION | 25.0 ROCKWELL C MINIMUM STEM |
| METALLIC HARDNESS RATING AND LOCATION | 32.0 ROCKWELL C MAXIMUM STEM |
| METALLIC HARDNESS RATING AND LOCATION | 45.0 ROCKWELL C MINIMUM TIP |
| NECK RADIUS | 0.2500 INCHES NOMINAL |
| SEAT ANGLE IN DEG | 45.0 |
| SECOND GROOVE DIAMETER | 0.2400 INCHES MINIMUM AND 0.2460 INCHES MAXIMUM |
| SECOND GROOVE WIDTH | 0.0625 INCHES NOMINAL |
| STEM DIAMETER | 0.3125 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM |
| STEM LENGTH | 3.7290 INCHES MINIMUM AND 3.7490 INCHES MAXIMUM |
| STEM STYLE | DOUBLE GROOVED |