Weapon system essential
A fitting that forms an angle of less that 180 degrees (3.141 radians) from a straight flow. One connecting end has machine threads (straight threads other than pipe or hose series) designed to accommodate a tube or is unthreaded and designed to accommodate a tube. The other end has external or internal machine threads (straight threads other than pipe or hose series) and is designed to facilitate a gasket, preformed packing, washer, or the like, to form a seal at the boss. It may have side or heel inlet(s). It is designed to connect a tube or tube fitting to a boss or boss fitting on items such as tanks, housings, valve fittings, or the like.
Dept. of the Army 
Dept. of the Air Force 
U.s. Marine Corps 
Dept. of the Navy 
U.s. Coast Guard 
Brazil 
Australia 
Canada 
Republic of Korea 
Turkey Classification: Threaded elbows and bends of iron or steel (other than cast iron or stainless steel) for pipes and tubes
NSN 5999-00-384-2954
NSN 4140-01-322-8133
NSN 5910-01-169-4615
NSN 5945-00-757-1019
NSN 5925-01-288-0025
NSN 6685-01-604-4054
NSN 6105-00-404-6210
NSN 5950-01-136-5400
NSN 5910-01-387-0940
NSN 5960-01-585-6385
NSN 6240-01-500-1714
NSN 5985-01-464-3153