2a single mounting facility thread class 0.235" single mounting facility thread length 1.273" overall length miniature, bushing mount unf single mounting facility thread series
2a single mounting facility thread class 0.417" single mounting facility thread length 2.112" overall length tap, circular, bushing mount unef single mounting facility thread series
2a all threaded stud thread class 0.550" all threaded stud thread length 7.500" overall length 18 all threaded stud thread quantity per inch cylindrical unf all threaded stud thread series
2b second mounting facility thread class right-hand second mounting facility 3.250" overall length 3.090" overall width 32 second mounting facility thread quantity per inch unc second mounting facility thread series
2a single mounting facility thread class 0.437" single mounting facility thread length 3.975" overall length tap, circular, bushing mount unef single mounting facility thread series