| MATERIAL AND LOCATION | COBALT ALLOY SEAT FACE |
| STEEL, FED STD 66, SAE EV4 HEAD |
| STEEL,QQ-S-624A,FS8645 STEM |
| METALLIC HARDNESS RATING AND LOCATION | 30.0 ROCKWELL C MINIMUM STEM |
| 40.0 ROCKWELL C MAXIMUM STEM |
| 50.0 ROCKWELL C MINIMUM TIP |
| HEAD STYLE | FLAT |
| HEAD HEIGHT | 0.2400 INCHES MINIMUM AND |
| 0.2550 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 1.9950 INCHES MINIMUM AND |
| 2.0050 INCHES MAXIMUM |
| NECK RADIUS | 0.5000 INCHES NOMINAL |
| SEAT ANGLE IN DEG | 45.0 |
| STEM STYLE | TAPERED |
| CHAMFER LENGTH | 0.0312 INCHES NOMINAL |
| MINOR OUTSIDE DIAMETER | 0.2760 INCHES MINIMUM AND |
| 0.2800 INCHES MAXIMUM |
| MINOR DIAMETER LENGTH | 0.1900 INCHES NOMINAL |
| STEM LENGTH | 6.0625 INCHES MINIMUM AND |
| 6.12025 INCHES MAXIMUM |
| STEM DIAMETER | 0.4345 INCHES MINIMUM AND |
| 0.4355 INCHES MAXIMUM |
| DISTANCE FROM MINOR DIAMETER TO STEM END | 0.1990 INCHES MINIMUM AND |
| 0.2010 INCHES MAXIMUM |
| CHAMFER ANGLE IN DEG | 45.0 |
| TAPER ANGLE IN DEG | 15.0 |
| CARBON RELIEF GROOVE | NOT INCLUDED |
| FSC APPLICATION DATA | GASOLINE ENGINE |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 1ML14 |
| DESIGN CONTROL REFERENCE | 150016B |