Used on w/s: helicopter, mh-53e; helicopter, search and rescue, hh-60h; helicopter, carrier based asw, sh-60f; helicopter, seahawk h-60; helicopter, uscg search and rescue, hh-60j; aircraft, viking s-3b; aircraft, hawkeye e-2c; helicopter, ch-53a/d/e; helicopter, lamps mark iii, sh-60b; aircraft, orion p-3. 2a thread class right-hand 0.187" thread length pan head style 40 thread quantity per inch cadmium surface treated unc thread series
1a thread class right-hand 0.750" thread length double hexagon w/hole head style 28 thread quantity per inch passivate surface treated unf thread series
Used on w/s: support equipment, f-4 aircraft; support equipment, a-10 aircraft; support equipment, f-15 aircraft; support equipment, f-16 aircraft; simulator f-16; aircraft, f-16; support equipment, f-111 aircraft; support equipment, b-1 aircraft. 2a thread class right-hand 1.042" thread length flat countersunk head style 24 thread quantity per inch unf thread series
2a thread class right-hand 0.262" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.422" thread length flat countersunk head style 32 thread quantity per inch anodize screw surface treated unf thread series
3a thread class right-hand 0.429" thread length flat countersunk head style 28 thread quantity per inch anodize screw surface treated unf thread series
Used on w/s: aircraft, orion p-3; aircraft, (ac-130h, mc-130h, ec-130e, hc-130). 2a thread class right-hand 0.855" thread length flat countersunk head style 32 thread quantity per inch unf thread series
3a thread class right-hand 0.429" thread length flat countersunk head style 28 thread quantity per inch anodize screw surface treated unf thread series
3a thread class right-hand 0.429" thread length flat countersunk head style 28 thread quantity per inch anodize screw surface treated unf thread series
3a thread class right-hand 0.460" thread length flat countersunk head style 28 thread quantity per inch anodize screw surface treated unf thread series
3a thread class right-hand 0.460" thread length flat countersunk head style 28 thread quantity per inch anodize screw surface treated unf thread series
3a thread class right-hand 0.460" thread length flat countersunk head style 28 thread quantity per inch anodize screw surface treated unf thread series
3a thread class right-hand 0.460" thread length flat countersunk head style 28 thread quantity per inch anodize screw surface treated unf thread series
3a thread class right-hand 0.461" thread length flat countersunk head style 28 thread quantity per inch anodize screw surface treated unf thread series
3a thread class right-hand 0.460" thread length flat countersunk head style 28 thread quantity per inch anodize screw surface treated unf thread series
3a thread class right-hand 0.464" thread length flat countersunk head style 24 thread quantity per inch anodize screw surface treated unf thread series
3a nut THREAD3a stud thread thread class right-hand nut threadright-hand stud thread 1.200" overall length 28 nut THREAD28 stud thread thread quantity per inch projection on nut end 0.050 in. lg; 0.125 in. dia uns nut threaduns stud thread thread series
right-hand stud thread 0.419" stud thread thread length 1.140" overall length 28 nut thread thread quantity per inch navy special project cadmium surface treated uns stud thread thread series
3a thread class right-hand 0.391" thread length dished hexagon head style 1.500" grip length 24 thread quantity per inch cadmium surface treated unf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.100" hole diameter 0.130" grip length anodize surface treated
3a thread class right-hand 0.620" thread length hexagon head style 0.070" hole diameter 24 thread quantity per inch concentric hole unthreaded unf thread series
