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 5935-01-212-6378
NSN 4140-01-080-8268
NSN 5996-01-032-4942
NSN 2925-01-019-8735
NSN 5990-01-174-6851
NSN 5965-01-446-6001
NSN 6685-01-092-8255
NSN 6130-00-941-8224
NSN 4140-01-071-6191
NSN 6610-01-392-0231
NSN 6645-01-175-3568
NSN 5999-01-202-2475