400.0mm wide
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 4140-01-003-9850
NSN 5935-01-629-9121
NSN 5990-00-736-8778
NSN 5965-01-099-2989
NSN 5965-00-539-7778
NSN 6220-01-425-2564
NSN 5920-01-096-1864
NSN 6150-01-284-6531
NSN 6650-01-190-7050
NSN 5985-01-485-2416
NSN 6135-00-112-8637
NSN 5905-00-476-8075