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 6610-01-171-1058
NSN 6610-01-146-8061
NSN 5905-01-608-8023
NSN 6685-01-401-5360
NSN 6105-01-548-5742
NSN 6240-00-905-0068
NSN 5996-01-085-6246
NSN 6145-01-553-1091
NSN 5925-00-467-6213
NSN 6105-01-413-1947
NSN 6620-01-371-5040
NSN 5930-00-185-5142