| CASEHARDENING INDICATOR | NOT CASEHARDENED |
| DISTANCE BETWEEN FIRST AND SECOND GROOVE CENTERS | 0.106 INCHES MINIMUM AND 0.115 INCHES MAXIMUM |
| DISTANCE BETWEEN FIRST AND SECOND RIDGE CENTERS | 0.106 INCHES MINIMUM AND 0.115 INCHES MAXIMUM |
| DISTANCE FROM BOTTOM TO FIRST GROOVE CENTER | 0.128 INCHES MINIMUM AND 0.136 INCHES MAXIMUM |
| DISTANCE FROM BOTTOM TO FIRST RIDGE CENTER | 0.1280 INCHES MINIMUM AND 0.1365 INCHES MAXIMUM |
| FIRST GROOVE WIDTH | 0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM |
| FSC APPLICATION DATA | VALVES GROUP,GASOLINE ENGINE,NONAIRCRAFT |
| LARGEST INSIDE DIAMETER | 0.308 INCHES MINIMUM AND 0.312 INCHES MAXIMUM |
| LARGEST OUTSIDE DIAMETER | 0.468 INCHES MINIMUM AND 0.472 INCHES MAXIMUM |
| MATERIAL | STEEL |
| MINIMUM INSIDE DIAMETER | 0.284 INCHES |
| OUTSIDE INCLUDED ANGLE IN DEG | 14.250 |
| OVERALL HEIGHT | 0.372 INCHES MINIMUM AND 0.379 INCHES MAXIMUM |
| SECOND GROOVE WIDTH | 0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM |
| STYLE DESIGNATOR | STRAIGHT BORE W/TWO GROOVES-LOWER OUTSIDE RADIUS |
| THREAD PROVISION | UNTHREADED |