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 4140-00-361-4691
NSN 6620-01-539-2729
NSN 5998-00-595-7166
NSN 6135-01-351-1131
NSN 5985-01-401-5387
NSN 5985-01-267-0747
NSN 6105-01-502-0824
NSN 5915-01-633-9845
NSN 5895-01-387-0972
NSN 5895-00-490-5618
NSN 2925-00-169-3775
NSN 2925-00-816-8765