3a thread class right-hand 0.400" thread length dished hexagon head style 0.302" grip length 28 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.282" thread length flat chamfer head style 18 thread quantity per inch furnish with one hole in bottom of point o.125 inch dia. first dia. length under head 0.093 inch . second dia. under head 0.497 inch phosphate surface treated unf thread series
3a thread class right-hand 0.410" thread length dished hexagon head style 0.865" grip length 28 thread quantity per inch cadmium surface treated unjf thread series
2a nut thread a thread class right-hand nut thread a 0.750" nut thread b thread length 20.380" overall length 28 nut thread a thread quantity per inch cadmium surface treated unf nut thread a thread series
3a thread class right-hand 0.378" thread length flat countersunk head style 0.240" grip length 28 thread quantity per inch passivate surface treated unjf thread series