| MATERIAL AND LOCATION | STEEL OVERALL |
| METALLIC HARDNESS RATING AND LOCATION | 50.0 ROCKWELL C MINIMUM STEM |
| 55.0 ROCKWELL C MAXIMUM STEM |
| 50.0 ROCKWELL C MINIMUM TIP |
| 55.0 ROCKWELL C MAXIMUM TIP |
| HEAD STYLE | FLAT |
| HEAD HEIGHT | 0.1600 INCHES MINIMUM AND |
| 0.1750 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 1.4790 INCHES MINIMUM AND |
| 1.4890 INCHES MAXIMUM |
| NECK RADIUS | 0.2500 INCHES NOMINAL |
| SEAT ANGLE IN DEG | 30.0 |
| STEM STYLE | GROOVED |
| GROOVE DIAMETER | 0.1960 INCHES MINIMUM AND |
| 0.2000 INCHES MAXIMUM |
| CHAMFER LENGTH | 0.0300 INCHES NOMINAL |
| GROOVE WIDTH | 0.0940 INCHES NOMINAL |
| STEM LENGTH | 4.3700 INCHES MINIMUM AND |
| 4.4900 INCHES MAXIMUM |
| STEM DIAMETER | 0.3095 INCHES MINIMUM AND |
| 0.3105 INCHES MAXIMUM |
| DISTANCE FROM GROOVE TO STEM END | 0.1720 INCHES MINIMUM AND |
| 0.1740 INCHES MAXIMUM |
| CHAMFER ANGLE IN DEG | 45.0 |
| CARBON RELIEF GROOVE | NOT INCLUDED |
| FSC APPLICATION DATA | GASOLINE ENGINE |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 1ML14 |
| DESIGN CONTROL REFERENCE | 38025A |