3a thread class right-hand 4.0000" overall length 0.7495" bore diameter 16 thread quantity per inch chromium inner member surface treated ball type unf thread series
0.2700" overall length 0.201 in. min, 0.206 in.max dia, 0.056 in.min, 0.061 max deep counterboredopposite flange end phosphate surface treated 22c solid, external flange one end