| MATERIAL AND LOCATION | COBALT ALLOY SEAT FACE |
| COBALT ALLOY STEM |
| COBALT ALLOY TIP |
| STEEL, FED STD 66, SAE HNV3 HEAD |
| METALLIC HARDNESS RATING AND LOCATION | 32.0 ROCKWELL C NOMINAL OVERALL |
| HEAD STYLE | FLAT |
| HEAD HEIGHT | 0.1860 INCHES MINIMUM AND |
| 0.2010 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 1.4950 INCHES MINIMUM AND |
| 1.5050 INCHES MAXIMUM |
| NECK RADIUS | 0.3440 INCHES NOMINAL |
| SEAT ANGLE IN DEG | 46.0 |
| STEM STYLE | TAPERED AND GROOVED |
| GROOVE DIAMETER | 0.2970 INCHES MINIMUM AND |
| 0.3030 INCHES MAXIMUM |
| CHAMFER LENGTH | 0.0020 INCHES NOMINAL |
| GROOVE WIDTH | 0.0950 INCHES MINIMUM AND |
| 0.1050 INCHES MAXIMUM |
| MINOR OUTSIDE DIAMETER | 0.2970 INCHES MINIMUM AND |
| 0.3030 INCHES MAXIMUM |
| MINOR DIAMETER LENGTH | 0.1050 INCHES MINIMUM AND |
| 0.1150 INCHES MAXIMUM |
| STEM LENGTH | 4.7695 INCHES MINIMUM AND |
| 4.7795 INCHES MAXIMUM |
| STEM DIAMETER | 0.3560 INCHES MINIMUM AND |
| 0.3570 INCHES MAXIMUM |
| DISTANCE FROM MINOR DIAMETER TO STEM END | 0.2840 INCHES MINIMUM AND |
| 0.2940 INCHES MAXIMUM |
| DISTANCE FROM GROOVE TO STEM END | 0.7660 INCHES NOMINAL |
| CHAMFER ANGLE IN DEG | 15.0 |
| TAPER ANGLE IN DEG | 30.0 |
| CARBON RELIEF GROOVE | NOT INCLUDED |
| FSC APPLICATION DATA | GASOLINE ENGINE |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 7X677 |
| DESIGN CONTROL REFERENCE | 3748244 |