2a single mounting facility thread class 0.410" single mounting facility thread length 2.630" overall length tap, circular, bushing mount unef single mounting facility thread series
1.375" overall length 1.500" overall width 27 single pressure connection thread quantity per inch cylindrical npt single pressure connection thread series
2a single mounting facility thread class 0.250" single mounting facility thread length 1.573" overall length miniature, bushing mount unf single mounting facility thread series
3.340" overall length 0.240" overall width left side d-shaped socket guide rotated 90 deg, right side d-shaped socket guide rotated 270 deg clockwise from normal