| MATERIAL AND LOCATION | STEEL, FED STD 66, AISI/SAE 8645 STEM |
| STEEL, FED STD 66, SAE VF3 SEAT FACE |
| STEEL, QQ-S-624, COMP 8745-CANCELED HEAD |
| METALLIC HARDNESS RATING AND LOCATION | 50.0 ROCKWELL C MINIMUM TIP |
| 55.0 ROCKWELL C MAXIMUM TIP |
| HEAD STYLE | FLAT |
| HEAD HEIGHT | 0.1560 INCHES MINIMUM AND |
| 0.1710 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 1.4630 INCHES MINIMUM AND |
| 1.4730 INCHES MAXIMUM |
| NECK RADIUS | 0.3100 INCHES NOMINAL |
| SEAT ANGLE IN DEG | 45.0 |
| STEM STYLE | TAPERED |
| CHAMFER LENGTH | 0.0312 INCHES NOMINAL |
| MINOR OUTSIDE DIAMETER | 0.2450 INCHES MINIMUM AND |
| 0.2490 INCHES MAXIMUM |
| MINOR DIAMETER LENGTH | 0.1900 INCHES NOMINAL |
| STEM LENGTH | 5.5395 INCHES MINIMUM AND |
| 5.5545 INCHES MAXIMUM |
| STEM DIAMETER | 0.3710 INCHES MINIMUM AND |
| 0.3720 INCHES MAXIMUM |
| DISTANCE FROM MINOR DIAMETER TO STEM END | 0.2190 INCHES MINIMUM AND |
| 0.2210 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 | 24617 |
| DESIGN CONTROL REFERENCE | 800829 |