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 6110-01-250-5054
NSN 5895-00-393-2512
NSN 5998-00-661-0380
NSN 5910-01-473-7677
NSN 4140-01-488-1169
NSN 6105-01-112-8206
NSN 5960-01-359-4257
NSN 6645-01-030-8930
NSN 6110-01-394-6324
NSN 5835-00-170-5238
NSN 5996-00-229-7037
NSN 5965-00-113-9748