2a thread class right-hand 0.942" thread length double chamfer head style 32 thread quantity per inch 0.920 in. long wrenching flats on shank, cross section is 0.168 in. across flats by 0.187 in. passivate surface treated unc thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.150" grip length 3150 double pounds per square inch shear strength passivate surface treated
2a thread class right-hand 0.390" thread length flat countersunk head style 20 thread quantity per inch navy special project zinc screw surface treated unc thread series
