| CARBON RELIEF GROOVE | NOT INCLUDED |
| CHAMFER ANGLE IN DEG | 45.0 |
| CHAMFER LENGTH | 0.0100 INCHES NOMINAL |
| DISTANCE FROM GROOVE TO STEM END | 0.2295 INCHES MINIMUM AND 0.2505 INCHES MAXIMUM |
| FSC APPLICATION DATA | GASOLINE ENGINE |
| GROOVE DIAMETER | 0.2980 INCHES MINIMUM AND 0.30430 INCHES MAXIMUM |
| GROOVE WIDTH | 0.0950 INCHES MINIMUM AND 0.1050 INCHES MAXIMUM |
| HEAD HEIGHT | 0.1340 INCHES MINIMUM AND 0.1540 INCHES MAXIMUM |
| HEAD STYLE | FLAT |
| OUTSIDE DIAMETER | 1.6900 INCHES MINIMUM AND 1.7000 INCHES MAXIMUM |
| METALLIC HARDNESS RATING AND LOCATION | 40.0 ROCKWELL C MINIMUM OVERALL |
| METALLIC HARDNESS RATING AND LOCATION | 45.0 ROCKWELL C MAXIMUM OVERALL |
| NECK RADIUS | 0.2500 INCHES NOMINAL |
| SEAT ANGLE IN DEG | 44.0 |
| STEM DIAMETER | 0.3412 INCHES MINIMUM AND 0.3422 INCHES MAXIMUM |
| STEM LENGTH | 3.8870 INCHES MINIMUM AND 3.9230 INCHES MAXIMUM |
| STEM STYLE | GROOVED |