2a thread class right-hand 1.500" thread length hexagon head style 11 thread quantity per inch electro-deposited zinc surface treated unc thread series
3a thread class right-hand 3.016" thread length double hexagon extended washer head style 9 thread quantity per inch cadmium surface treated unc thread series
3a thread class right-hand 2.766" thread length double hexagon extended washer head style 9 thread quantity per inch cadmium surface treated unc thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.251" grip length 1880 single pounds per square inch shear strength passivate locking ring surface treated
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.188" grip length 855 single pounds per square inch shear strength anodize stem surface treated