| DISTANCE FROM GROOVE TO STEM END | 0.2010 INCHES MINIMUM AND 0.2030 INCHES MAXIMUM |
| CARBON RELIEF GROOVE | NOT INCLUDED |
| CHAMFER ANGLE IN DEG | 45.0 |
| CHAMFER LENGTH | 0.0132 INCHES NOMINAL |
| FSC APPLICATION DATA | GASOLINE ENGINE |
| GROOVE WIDTH | 0.1900 INCHES NOMINAL |
| GROOVE DIAMETER | 0.2760 INCHES MINIMUM AND 0.2800 INCHES MAXIMUM |
| HEAD HEIGHT | 0.2000 INCHES MINIMUM AND 0.2150 INCHES MAXIMUM |
| HEAD STYLE | FLAT |
| OUTSIDE DIAMETER | 1.7130 INCHES MINIMUM AND 1.7230 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 8645 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 8645 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| MATERIAL DOCUMENT AND CLASSIFICATION | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR SAE SAE EV3 ASSN STD SINGLE MATERIAL RESPONSE HEAD THIRD LAYER |
| MATERIAL | COBALT ALLOY SEAT FACE |
| MATERIAL | STEEL COMP 8645 STEM |
| MATERIAL | STEEL COMP EV-3 HEAD THIRD LAYER |
| NECK RADIUS | 0.3750 INCHES NOMINAL |
| SEAT ANGLE IN DEG | 45.0 SINGLE |
| STEM DIAMETER | 0.4335 INCHES MINIMUM AND 0.4345 INCHES MAXIMUM |
| STEM LENGTH | 6.7850 INCHES MINIMUM AND 6.8000 INCHES MAXIMUM |