2a thread class right-hand 0.500" thread length flat countersunk head style 40 thread quantity per inch cadmium screw surface treated unc thread series
3a thread class right-hand 0.288" thread length round extended washer head style 28 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand flush countersunk head style 0.880" grip length 32 thread quantity per inch 125000 single pounds per square inch shear strength cadmium surface treated unjf thread series
3a thread class right-hand flush countersunk head style 0.938" grip length 24 thread quantity per inch 95000 single pounds per square inch shear strength unjf thread series
2a nut thread thread class right-hand nut thread 0.438" nut thread thread length 0.575" overall length 32 nut thread thread quantity per inch shape of shoulder round 0.328 in. nom dia knurled. for sheets 0.093" thick. passivate surface treated self-locking unc nut thread thread series
3a thread class right-hand flush countersunk head style 2.126" grip length 48 thread quantity per inch 108000 single pounds per square inch shear strength cadmium surface treated uns thread series
