Used on b1-b aircraft. 2a thread class countersunk w/reverse chamfer head style 32 thread quantity per inch hylok pin, protruding tension head passivate surface treated unjc thread series
Used on sikorsky helicopter, model s-92a. 9.222" inside diameter 9.293" outside diameter 0.086" major thickness spiral flat ring style 1.0 pounds per square inch tensile strength rating ring, retaining
3a thread class right-hand 0.438" thread length hexagon head style 0.115" grip length 24 thread quantity per inch cadmium fastener surface treated unjf thread series