2b single mounting facility thread class 0.500" overall length 1.730" overall width 56 single mounting facility thread quantity per inch rectangular indicating unc single mounting facility thread series
2b single mounting facility thread class 0.500" overall length 1.730" overall width 56 single mounting facility thread quantity per inch rectangular indicating unc single mounting facility thread series
2b single mounting facility thread class 0.380" overall length 1.730" overall width 56 single mounting facility thread quantity per inch rectangular indicating unc single mounting facility thread series