| MATERIAL AND LOCATION | STEEL, CORROSION RESISTING HEAD |
| STEEL, FED STD 66, AISI/SAE 3140 TIP |
| COBALT ALLOY SEAT FACE |
| METALLIC HARDNESS RATING AND LOCATION | 23.0 ROCKWELL C NOMINAL HEAD |
| 49.0 ROCKWELL C NOMINAL TIP |
| 23.0 ROCKWELL C NOMINAL SEAT FACE |
| HEAD STYLE | FLAT |
| HEAD HEIGHT | 2.40 MILLIMETERS MINIMUM AND |
| 2.55 MILLIMETERS MAXIMUM |
| OUTSIDE DIAMETER | 37.87 MILLIMETERS MINIMUM AND |
| 38.13 MILLIMETERS MAXIMUM |
| NECK RADIUS | 9.5 MILLIMETERS NOMINAL |
| SEAT ANGLE IN DEG | 45.0 |
| STEM STYLE | DOUBLE GROOVED |
| CHAMFER LENGTH | 0.38 MILLIMETERS MINIMUM AND |
| 1.02 MILLIMETERS MAXIMUM |
| MINOR OUTSIDE DIAMETER | 9.830 MILLIMETERS MINIMUM AND |
| 9.848 MILLIMETERS MAXIMUM |
| DISTANCE FROM FIRST GROOVE TO STEM END | 9.8 MILLIMETERS NOMINAL |
| FIRST GROOVE DIAMETER | 7.54 MILLIMETERS MINIMUM AND |
| 7.70 MILLIMETERS MAXIMUM |
| SECOND GROOVE DIAMETER | 7.54 MILLIMETERS MINIMUM AND |
| 7.70 MILLIMETERS MAXIMUM |
| FIRST GROOVE WIDTH | 2.41 MILLIMETERS MINIMUM AND |
| 2.67 MILLIMETERS MAXIMUM |
| SECOND GROOVE WIDTH | 2.67 MILLIMETERS MINIMUM AND |
| 2.92 MILLIMETERS MAXIMUM |
| CHAMFER ANGLE IN DEG | 20.0 |
| CARBON RELIEF GROOVE | NOT INCLUDED |