flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 41000 single pounds per square inch shear strength aluminum alloy 7050 chromate surface treated
3a thread class right-hand 1.255" grip length 24 thread quantity per inch 95000 single pounds per square inch shear strength passivate surface treated unjf thread series
3a thread class right-hand 0.454" thread length flat countersunk head style 0.365" grip length 24 thread quantity per inch navy special project internal drive ribbed cadmium surface treated unjf thread series
3a thread class right-hand 0.372" thread length flat countersunk head style 0.802" grip length 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.291" thread length flat countersunk head style 3.365" grip length 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 4.238" thread length flat chamfer head style 11 thread quantity per inch knurled head preferred; thread class 2a also acceptable unc thread series
3a thread class right-hand 1.150" thread length double hexagon w/hole head style 9.302" grip length 14 thread quantity per inch navy special project cadmium surface treated unjf thread series