2a thread class right-hand 0.520" thread length flat countersunk head style 24 thread quantity per inch chromate screw surface treated unc thread series
2a thread class right-hand 0.558" thread length round head style 32 thread quantity per inch passivate screw surface treated item is altered on one side to have a diameter of .150. unf thread series
3a thread class 3.000" thread length 32 thread quantity per inch zmachine-flat 100 deg head, full thread, torq-set, alloy steel cadmium plated per qq-p-416, type ii, class 2, 160, 000 to 180, 000 psi uts, shall be in accordance with all requirements as specified in national aerospace standard NAS1102 unjf thread series
3a thread class right-hand 3.218" thread length flat countersunk head style 24 thread quantity per inch cadmium screw surface treated unjf thread series