2a thread class right-hand 1.000" thread length hexagon head style 0.953" grip length 18 thread quantity per inch cadmium surface treated unc thread series
2a thread class right-hand 0.402" thread length fillister head style 0.031" hole diameter 56 thread quantity per inch cadmium or zinc screw surface treated unc thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.318 mils grip length 33000 single pounds per square inch shear strength
2a thread class right-hand 0.610" thread length undercut hexagon head style 32 thread quantity per inch cover top of head with red paint 1/32 min band permitted cadmium surface treated unc thread series
Used on spec item. 3a thread class right-hand 1.125" thread length hexagon head style 0.070" hole diameter 2.000" grip length 20 thread quantity per inch cadmium surface treated unf thread series