A structural shape fabricated from a ferrous or nonferrous material and resembles the following cross-sectional forms: for the letter h, both flanges of the h section are equal or longer than the width measured along the axis of the web; for the letter i, a 16 2/3 percent slope on the inside face of the ferrous type flange, either one or both of the nonferrous type flanges are shorter than the length measured along the axis of the web; for the letters t and z, on nonferrous type, the web is usually at right angles to the flanges. Letter h section may have a maximum of 5 percent slope on the inside face of the flanges.
Classification: Unwrought aluminum, not alloyed
NSN 6150-01-459-5553
NSN 5935-01-153-2662
NSN 5998-00-242-0468
NSN 6220-00-019-1650
NSN 6220-01-441-8662
NSN 2925-01-564-3847
NSN 4140-01-371-0327
NSN 5930-01-082-0600
NSN 4140-01-350-3277
NSN 5925-00-283-8139
NSN 5895-01-660-6451
NSN 5910-01-507-1850