3a thread class left-hand 4.4000" overall length 0.8745" bore diameter 12 thread quantity per inch chromium inner member surface treated ball type unf thread series
24.0mm overall width 25.0mm bore diameter 4 equally spaced grooves inside dia, 0.0500 in. min 0.0600 in. max radius; 0.0300 in. min 0.0400 in. max deep 92c counterbored outer rings, non-separable, face to face mounting