3a thread class right-hand 0.562" thread length crowned hexagon head style 0.046" hole diameter 0.594" grip length 28 thread quantity per inch alter from p/n 428H4-12 cadmium surface treated unf thread series
3a thread class right-hand 0.435" thread length double hexagon extended washer head style 24 thread quantity per inch alter from fscm 43999 p/n LD111-0020-0502 unjf thread series
3a thread class right-hand 0.510" grip length 32 thread quantity per inch 95000 single pounds per square inch shear strength anodize surface treated unjf thread series
3a thread class right-hand 0.553" thread length flat countersunk head style 3.240" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
