3a thread class right-hand flush countersunk head style 0.120" grip length 7100 double pounds per square inch shear strength cadmium surface treated unjf thread series
3a thread class right-hand 0.880" grip length 32 thread quantity per inch 125000 single pounds per square inch shear strength cadmium surface treated unjf thread series
3a thread class right-hand 0.401" thread length crowned hexagon head style 2.312" grip length 20 thread quantity per inch cadmium fastener or chromate fastener surface treated unjf thread series
3a thread class right-hand 1.163" thread length dished hexagon head style 6.428" grip length 18 thread quantity per inch cadmium surface treated unjf thread series