3a thread class right-hand 0.376" thread length hexagon head style 0.047" grip length 32 thread quantity per inch navy special project plastic polytetrafluoroethylene primary washer rubber butadiene-acrylonitrile class nbr ring passivate fastener surface treated unf thread series
3a thread class right-hand 0.514" thread length hexagon head style 28 thread quantity per inch bolt furnished with tab, material cres comp 301 per mil-s-5059, finish passivated per qq-p-35 passivate surface treated unjf thread series
Used on arresting gear barrier m-21. 3a thread class right-hand 2.410" thread length round head style 0.091" hole diameter 8 thread quantity per inch item is a non-aviation critical safety item (csi) whose failure will result in serious damage to equipment or serious injury or death to perssonnel unc thread series
