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 5999-00-240-4972
NSN 6150-01-537-7121
NSN 5905-00-162-2116
NSN 5999-01-509-0219
NSN 6110-00-928-6624
NSN 6620-01-087-1699
NSN 5905-01-441-2449
NSN 4140-01-561-7703
NSN 6240-01-604-1293
NSN 5930-01-424-3783
NSN 5996-00-278-5193
NSN 6645-00-641-3202