| DISTANCE FROM MINOR DIAMETER TO STEM END | 0.2100 INCHES MINIMUM AND 0.2300 INCHES MAXIMUM |
| CARBON RELIEF GROOVE | NOT INCLUDED |
| CHAMFER ANGLE IN DEG | 15.0 |
| CHAMFER LENGTH | 0.0312 INCHES NOMINAL |
| FSC APPLICATION DATA | GASOLINE ENGINE |
| HEAD HEIGHT | 0.1400 INCHES MINIMUM AND 0.1550 INCHES MAXIMUM |
| HEAD STYLE | FLAT |
| OUTSIDE DIAMETER | 1.8350 INCHES MINIMUM AND 1.8450 INCHES MAXIMUM |
| MATERIAL AND LOCATION | STEEL, FED STD 66, SAE HNV4 OVERALL |
| METALLIC HARDNESS RATING AND LOCATION | 28.0 ROCKWELL C MINIMUM STEM |
| METALLIC HARDNESS RATING AND LOCATION | 36.0 ROCKWELL C MAXIMUM STEM |
| METALLIC HARDNESS RATING AND LOCATION | 42.0 ROCKWELL C MINIMUM TIP |
| MINOR DIAMETER LENGTH | 0.0850 INCHES MINIMUM AND 0.1050 INCHES MAXIMUM |
| MINOR OUTSIDE DIAMETER | 0.3300 INCHES MINIMUM AND 0.3360 INCHES MAXIMUM |
| NECK RADIUS | 0.3800 INCHES NOMINAL |
| SEAT ANGLE IN DEG | 45.0 |
| STEM DIAMETER | 0.3715 INCHES MINIMUM AND 0.3722 INCHES MAXIMUM |
| STEM LENGTH | 5.0600 INCHES MINIMUM AND 5.0950 INCHES MAXIMUM |
| STEM STYLE | TAPERED |
| TAPER ANGLE IN DEG | 30.0 |