2a single mounting facility thread class 0.250" single mounting facility thread length 1.338" overall length snap or line unf single mounting facility thread series
2b thread class right-hand 1.625" overall width 32 thread quantity per inch polarized at position 3 cadmium surface treated hood, side opening w/clamp unc thread series
2b thread class right-hand 2.141" overall width 32 thread quantity per inch polarized at position 2 cadmium surface treated hood, side opening w/clamp unc thread series