2a thread class right-hand 0.180" thread length double hexagon w/hole head style 0.100" hole diameter 32 thread quantity per inch screw, captive, stainless steel, paasivated material is steel AMS6322 passivate surface treated unc thread series
Used on gear assembly, spec 1020-01-597-0518. right-hand 0.052" thread length hexagon head style 24 thread quantity per inch bolt, shoulder no. 11 bell type center located on both ends. unf thread series