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 5960-00-256-1203
NSN 5905-01-220-9135
NSN 5998-00-140-5090
NSN 6320-01-278-9832
NSN 5855-00-118-8762
NSN 5920-01-509-2967
NSN 6645-01-045-3867
NSN 6105-01-419-1217
NSN 5996-00-193-3459
NSN 5910-01-256-0821
NSN 5975-00-801-8325
NSN 5910-01-600-0965