2a single mounting facility thread class 0.375" single mounting facility thread length 2.000" overall length 1.250" overall width circular wafer, bushing mount unef single mounting facility thread series
2b single mounting facility thread class 6.669" overall length 4.375" overall width 20 single mounting facility thread quantity per inch tap, circuit selector unc single mounting facility thread series
2a thread class right-hand 4.281" overall length 1.125" overall width 28 thread quantity per inch without chain rectangular w/screw lock unf thread series