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 5998-01-136-5459
NSN 5960-00-791-1601
NSN 5925-00-054-4152
NSN 6610-01-056-7499
NSN 5905-01-499-5149
NSN 6685-01-102-2330
NSN 7035-01-265-0216
NSN 5855-00-135-9064
NSN 6620-01-540-8144
NSN 5895-01-196-8086
NSN 6620-00-235-4938
NSN 6105-00-225-5387