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 6150-01-177-6748
NSN 5999-00-910-7998
NSN 5905-00-300-2653
NSN 5910-01-528-1884
NSN 5945-00-609-0953
NSN 6220-01-051-0363
NSN 5915-01-181-5603
NSN 6620-01-136-9832
NSN 6610-01-371-5039
NSN 5965-01-509-7260
NSN 5975-01-546-2311
NSN 5835-01-303-6563