| MATERIAL AND LOCATION | COBALT ALLOY SEAT FACE |
| STEEL, FED STD 66, AISI/SAE 8645 STEM |
| STEEL, FED STD 66, SAE EV3 HEAD |
| HEAD STYLE | FLAT |
| HEAD HEIGHT | 0.2000 INCHES MINIMUM AND |
| 0.2150 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 1.7130 INCHES MINIMUM AND |
| 1.7230 INCHES MAXIMUM |
| NECK RADIUS | 0.3750 INCHES NOMINAL |
| SEAT ANGLE IN DEG | 45.0 |
| GROOVE DIAMETER | 0.2760 INCHES MINIMUM AND |
| 0.2800 INCHES MAXIMUM |
| CHAMFER LENGTH | 0.0132 INCHES NOMINAL |
| GROOVE WIDTH | 0.1900 INCHES NOMINAL |
| STEM LENGTH | 6.7850 INCHES MINIMUM AND |
| 6.8000 INCHES MAXIMUM |
| STEM DIAMETER | 0.4335 INCHES MINIMUM AND |
| 0.4345 INCHES MAXIMUM |
| DISTANCE FROM GROOVE TO STEM END | 0.2010 INCHES MINIMUM AND |
| 0.2030 INCHES MAXIMUM |
| CHAMFER ANGLE IN DEG | 45.0 |
| CARBON RELIEF GROOVE | NOT INCLUDED |
| FSC APPLICATION DATA | GASOLINE ENGINE |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 81240 |
| DESIGN CONTROL REFERENCE | 10A2273 |