| DISTANCE FROM GROOVE TO STEM END | 0.5350 INCHES MINIMUM AND 0.5750 INCHES MAXIMUM |
| CARBON RELIEF GROOVE | NOT INCLUDED |
| CHAMFER ANGLE IN DEG | 45.0 |
| CHAMFER LENGTH | 0.0312 INCHES NOMINAL |
| FSC APPLICATION DATA | GASOLINE ENGINE |
| GROOVE WIDTH | 0.0950 INCHES MINIMUM AND 0.1050 INCHES MAXIMUM |
| GROOVE DIAMETER | 0.2980 INCHES MINIMUM AND 0.3040 INCHES MAXIMUM |
| HEAD HEIGHT | 0.1325 INCHES MINIMUM AND 0.1475 INCHES MAXIMUM |
| HEAD STYLE | FLAT |
| OUTSIDE DIAMETER | 1.3740 INCHES MINIMUM AND 1.3840 INCHES MAXIMUM |
| MATERIAL AND LOCATION | STEEL, FED STD 66, AISI/SAE 4140 OVERALL |
| METALLIC HARDNESS RATING AND LOCATION | 35.0 ROCKWELL C MINIMUM OVERALL |
| METALLIC HARDNESS RATING AND LOCATION | 40.0 ROCKWELL C MAXIMUM OVERALL |
| NECK RADIUS | 0.3125 INCHES NOMINAL |
| SEAT ANGLE IN DEG | 44.0 |
| SPECIAL FEATURES | GRUMMAN AEROSPAE A-10 AIRCRAFT |
| STEM DIAMETER | 0.3425 INCHES MINIMUM AND 0.3430 INCHES MAXIMUM |
| STEM LENGTH | 5.3980 INCHES MINIMUM AND 5.4080 INCHES MAXIMUM |
| STEM STYLE | GROOVED |