| MATERIAL AND LOCATION | STEEL, FED STD 66, SAE VF2 HEAD |
| STEEL, FED STD 66, SAE NV3 STEM |
| METALLIC HARDNESS RATING AND LOCATION | 28.0 ROCKWELL C MINIMUM STEM |
| 45.0 ROCKWELL C MAXIMUM STEM |
| 45.0 ROCKWELL C NOMINAL TIP |
| HEAD STYLE | FLAT |
| HEAD HEIGHT | 0.1350 INCHES MINIMUM AND |
| 0.1450 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 1.1200 INCHES MINIMUM AND |
| 1.1300 INCHES MAXIMUM |
| NECK RADIUS | 0.3100 INCHES NOMINAL |
| SEAT ANGLE IN DEG | 45.0 |
| 45.2 |
| STEM STYLE | GROOVED |
| GROOVE DIAMETER | 0.2980 INCHES MINIMUM AND |
| 0.3040 INCHES MAXIMUM |
| CHAMFER LENGTH | 0.0300 INCHES NOMINAL |
| GROOVE WIDTH | 0.0950 INCHES MINIMUM AND |
| 0.1050 INCHES MAXIMUM |
| STEM LENGTH | 4.3700 INCHES MINIMUM AND |
| 4.3850 INCHES MAXIMUM |
| STEM DIAMETER | 0.3405 INCHES MINIMUM AND |
| 0.3415 INCHES MAXIMUM |
| DISTANCE FROM GROOVE TO STEM END | 0.2390 INCHES NOMINAL |
| CHAMFER ANGLE IN DEG | 45.0 |
| CARBON RELIEF GROOVE | NOT INCLUDED |