Used on acft b-2 bomber. 3a 1st end bulkhead thread class dicromate seal entire fitting except electrical bonding surface which shall have chemical conversion coating applied anodize surface treated unjf all ends thread series
Used on aircraft,hercules c-130.. 3a 1st end bulkhead thread class 12 1st end bulkhead thread quantity per inch anodize surface treated unj 1st end bulkhead thread series