3a thread class right-hand 0.443" thread length flat countersunk head style 1.802" grip length 28 thread quantity per inch cadmium surface treated unf thread series
2a thread class right-hand 0.250" thread length flat chamfer head style 56 thread quantity per inch navy special project passivate screw surface treated unf thread series
3a thread class right-hand 1.255" grip length 32 thread quantity per inch 108000 single pounds per square inch shear strength cadmium or cadmium surface treated unjf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 90000 single pounds per square inch shear strength passivate surface treated
3a thread class right-hand 0.344" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated under side of head coated with polytetrafluoroethylene unjf thread series
Used on aircraft,tomcat f-14. 3a thread class right-hand 0.306" thread length flat countersunk head style 32 thread quantity per inch unc thread series
