2a single mounting facility thread class 0.437" single mounting facility thread length 2.591" overall length tap, circular, bushing mount unef single mounting facility thread series
2a single mounting facility thread class 0.797" overall length 0.400" overall width 40 single mounting facility thread quantity per inch unc single mounting facility thread series
1.875" overall length 2.187" overall width marking, fire pull, painted in black lettering, 0.166 in. dia hole thru center line of reamed hole, counterbore both sides 0.281 in. dia by 0.020 in. deep for attachment
3a single pressure connection thread class 4.300" overall length 20 single pressure connection thread quantity per inch unf single pressure connection thread series