flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 49000 single pounds per square inch shear strength cadmium surface treated
Used on aircraft, eagle f-15. 3a thread class right-hand 0.517" thread length double hexagon head style 3.428" grip length 18 thread quantity per inch unjf thread series
3a thread class right-hand 1.343" thread length hexagon head style 1.609" grip length 12 thread quantity per inch cadmium surface treated unf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.057" grip length 1090 single pounds per square inch shear strength passivate surface treated