37 degrees surface shall be free of anodize and alodined per mil-c-5541, class 1a
A fitting that forms an angle of less than 180 degrees (3.141 radians) from a straight flow. Both connecting ends have machine threads (straight threads other than pipe or hose series) designed to accommodate a tube or is unthreaded and designed to accommodate a tube. It may have side or heel inlet(s). See also elbow, pipe and connector, multiple, fluid pressure line.
Classification: Threaded elbows and bends of iron or steel (other than cast iron or stainless steel) for pipes and tubes
NSN 6240-00-316-3167
NSN 6645-01-050-9794
NSN 5990-00-193-3028
NSN 6130-01-515-6274
NSN 7035-00-890-7649
NSN 6110-00-914-8793
NSN 5960-01-385-4333
NSN 5990-00-285-1948
NSN 5915-01-582-5096
NSN 6145-01-173-5143
NSN 5935-01-382-9867
NSN 5945-00-629-2404