| DISTANCE FROM FIRST GROOVE TO STEM END | 0.2500 INCHES NOMINAL |
| DISTANCE FROM SECOND GROOVE TO STEM END | 0.4050 INCHES MINIMUM AND 0.4070 INCHES MAXIMUM |
| CARBON RELIEF GROOVE | NOT INCLUDED |
| CHAMFER ANGLE IN DEG | 30.0 |
| CHAMFER LENGTH | 0.0312 INCHES NOMINAL |
| FIRST GROOVE DIAMETER | 0.2400 INCHES MINIMUM AND 0.2460 INCHES MAXIMUM |
| FIRST GROOVE WIDTH | 0.0614 INCHES MINIMUM AND 0.0634 INCHES MAXIMUM |
| FSC APPLICATION DATA | GASOLINE ENGINE |
| HEAD HEIGHT | 0.1875 INCHES NOMINAL |
| HEAD STYLE | FLAT |
| III MATERIAL AND LOCATION | STEEL, FED STD 66, AISI/SAE 3140 OVERALL |
| PROPRIETARY CHARACTERISTICS | PACS |
| METALLIC HARDNESS RATING AND LOCATION | 30.0 ROCKWELL C MINIMUM OVERALL ERR-100 |
| METALLIC HARDNESS RATING AND LOCATION | 40.0 ROCKWELL C MAXIMUM OVERALL ERR-100 |
| NECK RADIUS | 0.3125 INCHES NOMINAL |
| OUTSIDE DIAMETER | 1.3287 INCHES MINIMUM AND 1.3487 INCHES MAXIMUM |
| SEAT ANGLE IN DEG | 45.0 |
| SECOND GROOVE DIAMETER | 0.2400 INCHES MINIMUM AND 0.2460 INCHES MAXIMUM |
| SECOND GROOVE WIDTH | 0.0614 INCHES MINIMUM AND 0.0634 INCHES MAXIMUM |
| STEM DIAMETER | 0.3100 INCHES MINIMUM AND 0.3110 INCHES MAXIMUM |
| STEM LENGTH | 4.2812 INCHES NOMINAL |
| STEM STYLE | DOUBLE GROOVED |