| MATERIAL AND LOCATION | STEEL, FED STD 66, AISI/SAE 3140 OVERALL |
| METALLIC HARDNESS RATING AND LOCATION | 37.0 ROCKWELL C MINIMUM TIP |
| 44.0 ROCKWELL C MAXIMUM TIP |
| HEAD STYLE | FLAT |
| HEAD HEIGHT | 0.1561 INCHES NOMINAL |
| OUTSIDE DIAMETER | 1.8550 INCHES MINIMUM AND |
| 1.8650 INCHES MAXIMUM |
| NECK RADIUS | 0.3750 INCHES NOMINAL |
| SEAT ANGLE IN DEG | 44.0 |
| CHAMFER LENGTH | 0.0156 INCHES NOMINAL |
| STEM LENGTH | 6.9310 INCHES MINIMUM AND |
| 6.9560 INCHES MAXIMUM |
| STEM DIAMETER | 0.4344 INCHES MINIMUM AND |
| 0.4352 INCHES MAXIMUM |
| DISTANCE FROM FIRST GROOVE TO STEM END | 0.3590 INCHES NOMINAL |
| DISTANCE FROM SECOND GROOVE TO STEM END | 0.6710 INCHES MINIMUM AND |
| 0.6910 INCHES MAXIMUM |
| DISTANCE FROM THIRD GROOVE TO STEM END | 0.8750 INCHES NOMINAL |
| FIRST GROOVE DIAMETER | 0.4040 INCHES MINIMUM AND |
| 0.4080 INCHES MAXIMUM |
| SECOND GROOVE DIAMETER | 0.4040 INCHES MINIMUM AND |
| 0.4080 INCHES MAXIMUM |
| THIRD GROOVE DIAMETER | 0.4040 INCHES MINIMUM AND |
| 0.4080 INCHES MAXIMUM |
| FIRST GROOVE WIDTH | 0.1320 INCHES MINIMUM AND |
| 0.1420 INCHES MAXIMUM |
| SECOND GROOVE WIDTH | 0.1320 INCHES MINIMUM AND |
| 0.1420 INCHES MAXIMUM |
| THIRD GROOVE WIDTH | 0.0300 INCHES MINIMUM AND |
| 0.0400 INCHES MAXIMUM |
| CHAMFER ANGLE IN DEG | 45.0 |
| CARBON RELIEF GROOVE | NOT INCLUDED |
| DEPARTURE FROM CITED DOCUMENT | MILE11276,PARAGRAPH 3.8.3VALVES |
| FSC APPLICATION DATA | DIESEL ENGINE |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MILE11276 |