| MATERIAL AND LOCATION | STEEL OVERALL |
| METALLIC HARDNESS RATING AND LOCATION | 33.0 ROCKWELL C MINIMUM HEAD |
| 38.0 ROCKWELL C MAXIMUM HEAD |
| 33.0 ROCKWELL C MINIMUM SEAT FACE |
| 38.0 ROCKWELL C MAXIMUM SEAT FACE |
| 33.0 ROCKWELL C MINIMUM STEM |
| 38.0 ROCKWELL C MAXIMUM STEM |
| 50.0 ROCKWELL C MINIMUM TIP |
| 54.0 ROCKWELL C MAXIMUM TIP |
| HEAD STYLE | FLAT |
| HEAD HEIGHT | 0.1875 INCHES NOMINAL |
| OUTSIDE DIAMETER | 1.8500 INCHES NOMINAL |
| NECK RADIUS | 0.4062 INCHES NOMINAL |
| SEAT ANGLE IN DEG | 30.0 |
| STEM STYLE | DOUBLE GROOVED |
| CHAMFER LENGTH | 0.0312 INCHES NOMINAL |
| STEM LENGTH | 4.8125 INCHES NOMINAL |
| STEM DIAMETER | 0.3407 INCHES MINIMUM AND |
| 0.3412 INCHES MAXIMUM |
| DISTANCE FROM FIRST GROOVE TO STEM END | 0.2812 INCHES NOMINAL |
| DISTANCE FROM SECOND GROOVE TO STEM END | 0.5250 INCHES MINIMUM AND |
| 0.5300 INCHES MAXIMUM |
| FIRST GROOVE DIAMETER | 0.2890 INCHES MINIMUM AND |
| 0.3020 INCHES MAXIMUM |
| SECOND GROOVE DIAMETER | 0.2980 INCHES MINIMUM AND |
| 0.3020 INCHES MAXIMUM |
| FIRST GROOVE WIDTH | 0.1250 INCHES MINIMUM AND |
| 0.1300 INCHES MAXIMUM |
| SECOND GROOVE WIDTH | 0.1000 INCHES MINIMUM AND |
| 0.1050 INCHES MAXIMUM |
| CHAMFER ANGLE IN DEG | 45.0 |
| CARBON RELIEF GROOVE | NOT INCLUDED |
| FSC APPLICATION DATA | GASOLINE ENGINE |