| CARBON RELIEF GROOVE | NOT INCLUDED |
| CHAMFER ANGLE IN DEG | 45.0 |
| CHAMFER LENGTH | 0.0500 INCHES NOMINAL |
| DISTANCE FROM GROOVE TO STEM END | 0.2500 INCHES NOMINAL |
| FSC APPLICATION DATA | DIESEL ENGINE |
| GROOVE DIAMETER | 0.2460 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM |
| GROOVE WIDTH | 0.0940 INCHES MINIMUM AND 0.0980 INCHES MAXIMUM |
| HEAD HEIGHT | 0.1250 INCHES MINIMUM AND 0.1400 INCHES MAXIMUM |
| HEAD STYLE | FLAT |
| METALLIC HARDNESS RATING AND LOCATION | 25.0 ROCKWELL C MINIMUM HEAD |
| METALLIC HARDNESS RATING AND LOCATION | 25.0 ROCKWELL C MINIMUM STEM |
| METALLIC HARDNESS RATING AND LOCATION | 35.0 ROCKWELL C MAXIMUM HEAD |
| METALLIC HARDNESS RATING AND LOCATION | 35.0 ROCKWELL C MAXIMUM STEM |
| METALLIC HARDNESS RATING AND LOCATION | 50.0 ROCKWELL C MINIMUM TIP |
| NECK RADIUS | 0.5000 INCHES NOMINAL |
| OUTSIDE DIAMETER | 1.2760 INCHES MINIMUM AND 1.2860 INCHES MAXIMUM |
| SEAT ANGLE IN DEG | 45.0 |
| STEM DIAMETER | 0.3100 INCHES MINIMUM AND 0.3110 INCHES MAXIMUM |
| STEM LENGTH | 5.3403 INCHES NOMINAL |
| STEM STYLE | GROOVED |