3a thread class right-hand 0.444" thread length dished hexagon head style 1.865" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.344" grip length "u" denotes single action fasteners installed with a single action tool cadmium sleeve surface treated
2a thread class right-hand 0.625" thread length flat chamfer head style 32 thread quantity per inch the unthreaded area is on the endof the screw unc thread series
3a thread class right-hand 0.400" thread length hexagon head style 0.678" grip length 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 5.195" thread length flat chamfer head style 0.061" hole diameter 20 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.370" grip length 28 thread quantity per inch 95000 single pounds per square inch shear strength surface coating per hi-shear spec. 306, ty 2 unjf thread series