2a thread class right-hand 0.275" thread length square head style 40 thread quantity per inch passivate screw surface treated threaded hole in head 0.112-40unc-2b; 0.120 in. min depth unc thread series
2a thread class right-hand 0.275" thread length square head style 40 thread quantity per inch passivate screw surface treated threaded hole in head 0.112-40nc-2b; 0.120 in. min depth unc thread series