3a thread class right-hand 0.528" thread length dished hexagon head style 0.490" grip length 20 thread quantity per inch passivate surface treated unf thread series
2a thread class right-hand 0.309" thread length flat countersunk head style 28 thread quantity per inch passivate screw surface treated unf thread series
3a thread class right-hand 0.666" thread length dished hexagon head style 0.428" grip length 16 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand flush countersunk head style 0.439" grip length 156000 single pounds per square inch shear strength nickel surface treated unjf thread series
Used on f101-102engine b1b. 3a thread class right-hand 0.570" thread length square head style 28 thread quantity per inch surface finish of head is 63 microinches:surface finish of grip is 32 microinches chromium first shoulder surface treated unjf thread series
3a thread class right-hand 0.370" thread length dished hexagon head style 0.240" grip length 28 thread quantity per inch passivate surface treated unf thread series
Used on uscg hu25a aircraft. 2b thread class right-hand 0.230" thread length 32 thread quantity per inch pac ajjf chamfer 45 degree x .030 cadmium surface treated flange unjc thread series
3a thread class right-hand 0.877" thread length dished hexagon head style 1.115" grip length 18 thread quantity per inch cadmium surface treated unjf thread series
Used on f101-102engine b1b. 3a thread class right-hand 0.570" thread length square head style 28 thread quantity per inch chromium first shoulder surface treated unjf thread series
