3a thread class right-hand 0.377" thread length hexagon head style 5.610" grip length 32 thread quantity per inch undercut .018 min passivate surface treated unf thread series
3a thread class right-hand 0.905" thread length double hexagon extended washer head style 0.369" grip length 24 thread quantity per inch unjf thread series
3a thread class right-hand 1.094" thread length hexagon head style 16 thread quantity per inch 0.250 in dia rod, porm 0.030 in, welded across top of head. rod is steel comp 304 per ams 5639, 7.000 in long, porm 0.030 in passivate fastener surface treated unf thread series