3a thread class right-hand 0.271" thread length fillister head style 0.062" hole diameter 28 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.219" thread length flat countersunk undercut head style 32 thread quantity per inch navy special project furnished w/one non-metallic flat washer cadmium fastener surface treated unc thread series
3a thread class right-hand 0.376" thread length flat countersunk undercut head style 40 thread quantity per inch navy special project furnished w/one non-metallic flat washer cadmium fastener surface treated unc thread series
3a thread class right-hand 0.231" thread length flat countersunk undercut head style 40 thread quantity per inch navy special project furnished w/one non-metallic washer cadmium fastener surface treated unc thread series
3a thread class right-hand 0.297" thread length watertight head style 40 thread quantity per inch navy special project furnished with a non-metallic washer cadmium fastener surface treated unc thread series
2a thread class right-hand 0.219" thread length pan no. 2 head style 32 thread quantity per inch furnished w/one retaining ring passivate surface treated unf thread series