2a single mounting facility thread class 0.547" overall length 40 single mounting facility thread quantity per inch cadmium surface treated irregular unc single mounting facility thread series
2a single mounting facility thread class 0.440" single mounting facility thread length 2.040" overall length tap, circular, bushing mount unef single mounting facility thread series
2a single mounting facility thread class 0.440" single mounting facility thread length 3.044" overall length tap, circular, bushing mount unef single mounting facility thread series
2a single mounting facility thread class 0.440" single mounting facility thread length 3.060" overall length tap, circular, bushing mount unef single mounting facility thread series