3a thread class right-hand 1.094" thread length hexagon head style 1.562" grip length 16 thread quantity per inch cadmium surface treated unf thread series
2a thread class right-hand 0.355" thread length flat chamfer head style 0.046" hole diameter 24 thread quantity per inch zinc surface treated unc thread series
3a thread class right-hand 0.475" thread length bevel-conical head style 28 thread quantity per inch cadmium or chromate surface treated unf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.157" grip length 65000 single pounds per square inch shear strength
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.422" grip length 49000 single pounds per square inch shear strength
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.094" grip length 9000 double pounds per square inch shear strength cadmium body surface treated