3a thread class right-hand 1.960" thread length fillister head style 0.034" hole diameter 32 thread quantity per inch acft model HU25a ATF3-6 engine speed adjustment-manual mode unf thread series
2a thread class right-hand 0.450" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.440" thread length flat countersunk head style 20 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.660" thread length flat countersunk head style 20 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 1.040" thread length flat countersunk head style 20 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.570" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 1.584" thread length flat countersunk head style 24 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 1.834" thread length flat countersunk head style 24 thread quantity per inch passivate screw surface treated unc thread series