2b thread class 32 thread quantity per inch counterbored opposite flange 0.166 in. min 0.169 in. max dia, 1.141 in. deep, 2 notches in flange pepiphery 180 deg apart, flange edge radial or square optional anodize surface treated flange unc thread series
Used on w/s: tarawa class lha; forrestal class cv; nimitz class cvn; wasp class lhd; mine countermeasures support (mcs) class (lph-12). 20 thread quantity per inch passivate surface treated plain unf thread series
3b thread class 32 thread quantity per inch pilot portion drilled 3 places 0.073 in. min 0.083 in. max dia passivate surface treated plain unf thread series
