3b thread class 20 thread quantity per inch six 0.093 in. dia holes equally spaced drilled on flange face passivate surface treated flange unjf thread series
3a thread class right-hand 0.675" thread length hexagon head style 2.808" grip length 16 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.291" thread length hexagon head style 0.615" grip length 28 thread quantity per inch countersink hole nearest head 90 deg by 0.125 in. dia enamel surface treated unjf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 24000 single pounds per square inch shear strength anodize or oxide film surface treated
3a thread class right-hand flush countersunk head style 0.693" grip length 32 thread quantity per inch 95000 single pounds per square inch shear strength unjc thread series
Used on w/s: aircraft, harrier av-8b; aircraft, eagle f-15. 3a thread class right-hand flush countersunk head style 0.567" grip length 32 thread quantity per inch 95000 single pounds per square inch shear strength unjc thread series
3a thread class right-hand flush countersunk head style 0.317" grip length 32 thread quantity per inch 95000 single pounds per square inch shear strength passivate surface treated unjf thread series
3a thread class right-hand 0.130" grip length 32 thread quantity per inch 95000 single pounds per square inch shear strength passivate surface treated unjf thread series
3a nut thread thread class right-hand nut thread 0.250" stud thread thread length 1.235" overall length 28 stud thread thread quantity per inch hex hole in stud end 0.1250 to 0.1270 in. across flats by 0.156 in. min dp. accompanied by captive bushing assembly passivate surface treated stepped unf stud thread thread series
3a nut thread thread class right-hand nut thread 0.250" stud thread thread length 1.285" overall length 28 stud thread thread quantity per inch hex hole in stud end 0.1250 to 0.1270 in. across flats by 0.156 in. min dp. accompanied by captive bushing assembly passivate surface treated stepped unf stud thread thread series
