2a all ends thread class 12 all ends thread quantity per inch zinc nipple or cadmium nipple surface treated flared w/ bulkhead thread un all ends thread series
3a 2nd end thread class 20 1st end thread quantity per inch passivate inside surface treated flareless w/ offset wrenching facility uns 1st end thread series
Used on aircraft, b-2, c-5, c-130's, f-14, f-16; ship, cvn. 3a all ends thread class weapon system essential passivate surface treated flareless (tube) unf all ends thread series
2a 1st end bulkhead thread class 24 1st end bulkhead thread quantity per inch captive sleeve long w/ offset wrenching facility uns all ends thread series
Used on sikorsky model ch-54a and ch-54b cargo transport helicopter. 3a all ends thread class cadmium surface treated flared w/ center wrenching facility unjf all ends thread series
2a 1st end bulkhead thread class 20 1st end bulkhead thread quantity per inch grumman A10 aircraft flaremess w/ bulkhead threads un all ends thread series
Used on lightweight water purifier 4610-01-495-0046. 3a 1st end bulkhead thread class passivate surface treated flareless w/ offset wrenching facility unf 1st end bulkhead thread series
2a all ends thread class 20 all ends thread quantity per inch drilled for lockwire anodize surface treated plain w/ bulkhead thread un all ends thread series
