2a thread class right-hand 2.090" thread length hexagon head style 0.350" grip length 24 thread quantity per inch cadmium surface treated unf thread series
2a thread class right-hand 0.500" thread length hexagon head style 28 thread quantity per inch navy special project cadmium surface treated unf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.906" grip length color nut blue cadmium bolt surface treated
2a thread class right-hand 0.875" thread length hexagon extended washer head style 16 thread quantity per inch cadmium or phosphate or zinc surface treated unc thread series
3a thread class right-hand 1.250" thread length flat chamfer head style 0.064" hole diameter 24 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.297" thread length fillister head style 32 thread quantity per inch recessed head passivate fastener surface treated unf thread series