2a thread class right-hand 2.875" overall length 1.560" overall width 40 thread quantity per inch passivate surface treated hood, top opening w/jackscrew unc thread series
Used on model no. px-80. 2b single mounting facility thread class 4.870" overall length 1.000" overall width fast operating, fast release unc single mounting facility thread series
2a single mounting facility thread class 0.375" single mounting facility thread length 1.374" overall length circular wafer, bushing mount unef single mounting facility thread series