Steel angles L (AISC): L4x4x1/4, L3x3x1/4, L2x2x1/4, L5x3x1/4 dimensions + STEP/STL — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/aisc-l-angles/ (sheet CC BY 4.0) Basis: AISC Shapes Database (v15.0 values): d, b, t, k for every equal and unequal angle Catalog version: 2026-10-20 Overall (mm): length 101.6 - Single angles L(long leg) x (short leg) x thickness: L4x4x1/4 has two 4 in legs 1/4 in thick, L5x3-1/2x3/8 a 5 in leg and a 3-1/2 in leg. The long leg is d and the short leg b in the AISC database; both legs have the same thickness t. - The thickness is taken from the designation (the database prints it rounded to two decimals). The root fillet is not printed: it is derived from the printed k (back of the leg to the toe of the fillet), r = k - t. The toe radius is not printed either, so toes are square. - The files put the heel at the origin: the long leg runs along +y, the short leg along +z. 4 in (101.6 mm) long. Drawn area is within 4 % of the printed area on all of them. - 31 of the 137 sizes (equal and unequal) have files; all sizes are in the table. shape lb/ft long leg (in) short leg (in) t (in) k (in) long leg (mm) short leg (mm) t (mm) L12x12x1-3/8 105.0 12.0 12.0 1.375 2.09 304.8 304.8 34.92 L12x12x1-1/4 96.4 12.0 12.0 1.25 1.96 304.8 304.8 31.75 L12x12x1-1/8 87.2 12.0 12.0 1.125 1.84 304.8 304.8 28.57 L12x12x1 77.8 12.0 12.0 1.0 1.71 304.8 304.8 25.4 L10x10x1-3/8 87.1 10.0 10.0 1.375 2.18 254.0 254.0 34.92 L10x10x1-1/4 79.9 10.0 10.0 1.25 2.05 254.0 254.0 31.75 L10x10x1-1/8 72.3 10.0 10.0 1.125 1.93 254.0 254.0 28.57 L10x10x1 64.7 10.0 10.0 1.0 1.8 254.0 254.0 25.4 L10x10x7/8 56.9 10.0 10.0 0.875 1.68 254.0 254.0 22.22 L10x10x3/4 49.1 10.0 10.0 0.75 1.55 254.0 254.0 19.05 L8x8x1-1/8 56.9 8.0 8.0 1.125 1.75 203.2 203.2 28.57 L8x8x1 51.0 8.0 8.0 1.0 1.63 203.2 203.2 25.4 L8x8x7/8 45.0 8.0 8.0 0.875 1.5 203.2 203.2 22.22 L8x8x3/4 38.9 8.0 8.0 0.75 1.38 203.2 203.2 19.05 L8x8x5/8 32.7 8.0 8.0 0.625 1.25 203.2 203.2 15.88 L8x8x9/16 29.6 8.0 8.0 0.5625 1.19 203.2 203.2 14.29 L8x8x1/2 26.4 8.0 8.0 0.5 1.13 203.2 203.2 12.7 L8x6x1 44.2 6.0 8.0 1.0 1.5 152.4 203.2 25.4 L8x6x7/8 39.1 6.0 8.0 0.875 1.38 152.4 203.2 22.22 L8x6x3/4 33.8 6.0 8.0 0.75 1.25 152.4 203.2 19.05 L8x6x5/8 28.5 6.0 8.0 0.625 1.13 152.4 203.2 15.88 L8x6x9/16 25.7 6.0 8.0 0.5625 1.06 152.4 203.2 14.29 L8x6x1/2 23.0 6.0 8.0 0.5 1.0 152.4 203.2 12.7 L8x6x7/16 20.2 6.0 8.0 0.4375 0.938 152.4 203.2 11.11 L8x4x1 37.4 4.0 8.0 1.0 1.5 101.6 203.2 25.4 L8x4x7/8 33.1 4.0 8.0 0.875 1.38 101.6 203.2 22.22 L8x4x3/4 28.7 4.0 8.0 0.75 1.25 101.6 203.2 19.05 L8x4x5/8 24.2 4.0 8.0 0.625 1.13 101.6 203.2 15.88 L8x4x9/16 21.9 4.0 8.0 0.5625 1.06 101.6 203.2 14.29 L8x4x1/2 19.6 4.0 8.0 0.5 1.0 101.6 203.2 12.7 L8x4x7/16 17.2 4.0 8.0 0.4375 0.938 101.6 203.2 11.11 L7x4x3/4 26.2 4.0 7.0 0.75 1.25 101.6 177.8 19.05 L7x4x5/8 22.1 4.0 7.0 0.625 1.13 101.6 177.8 15.88 L7x4x1/2 17.9 4.0 7.0 0.5 1.0 101.6 177.8 12.7 L7x4x7/16 15.7 4.0 7.0 0.4375 0.938 101.6 177.8 11.11 L7x4x3/8 13.6 4.0 7.0 0.375 0.875 101.6 177.8 9.52 L6x6x1 37.4 6.0 6.0 1.0 1.5 152.4 152.4 25.4 L6x6x7/8 33.1 6.0 6.0 0.875 1.38 152.4 152.4 22.22 L6x6x3/4 28.7 6.0 6.0 0.75 1.25 152.4 152.4 19.05 L6x6x5/8 24.2 6.0 6.0 0.625 1.13 152.4 152.4 15.88 L6x6x9/16 21.9 6.0 6.0 0.5625 1.06 152.4 152.4 14.29 L6x6x1/2 19.6 6.0 6.0 0.5 1.0 152.4 152.4 12.7 L6x6x7/16 17.2 6.0 6.0 0.4375 0.938 152.4 152.4 11.11 L6x6x3/8 14.9 6.0 6.0 0.375 0.875 152.4 152.4 9.52 L6x6x5/16 12.4 6.0 6.0 0.3125 0.813 152.4 152.4 7.94 L6x4x7/8 27.2 4.0 6.0 0.875 1.38 101.6 152.4 22.22 L6x4x3/4 23.6 4.0 6.0 0.75 1.25 101.6 152.4 19.05 L6x4x5/8 20.0 4.0 6.0 0.625 1.13 101.6 152.4 15.88 L6x4x9/16 18.1 4.0 6.0 0.5625 1.06 101.6 152.4 14.29 L6x4x1/2 16.2 4.0 6.0 0.5 1.0 101.6 152.4 12.7 L6x4x7/16 14.3 4.0 6.0 0.4375 0.938 101.6 152.4 11.11 L6x4x3/8 12.3 4.0 6.0 0.375 0.875 101.6 152.4 9.52 L6x4x5/16 10.3 4.0 6.0 0.3125 0.813 101.6 152.4 7.94 L6x3-1/2x1/2 15.3 3.5 6.0 0.5 1.0 88.9 152.4 12.7 L6x3-1/2x3/8 11.7 3.5 6.0 0.375 0.875 88.9 152.4 9.52 L6x3-1/2x5/16 9.8 3.5 6.0 0.3125 0.813 88.9 152.4 7.94 L5x5x7/8 27.2 5.0 5.0 0.875 1.38 127.0 127.0 22.22 L5x5x3/4 23.6 5.0 5.0 0.75 1.25 127.0 127.0 19.05 L5x5x5/8 20.0 5.0 5.0 0.625 1.13 127.0 127.0 15.88 L5x5x1/2 16.2 5.0 5.0 0.5 1.0 127.0 127.0 12.7 L5x5x7/16 14.3 5.0 5.0 0.4375 0.938 127.0 127.0 11.11 L5x5x3/8 12.3 5.0 5.0 0.375 0.875 127.0 127.0 9.52 L5x5x5/16 10.3 5.0 5.0 0.3125 0.813 127.0 127.0 7.94 L5x3-1/2x3/4 19.8 3.5 5.0 0.75 1.19 88.9 127.0 19.05 L5x3-1/2x5/8 16.8 3.5 5.0 0.625 1.06 88.9 127.0 15.88 L5x3-1/2x1/2 13.6 3.5 5.0 0.5 0.938 88.9 127.0 12.7 L5x3-1/2x3/8 10.4 3.5 5.0 0.375 0.813 88.9 127.0 9.52 L5x3-1/2x5/16 8.7 3.5 5.0 0.3125 0.75 88.9 127.0 7.94 L5x3-1/2x1/4 7.0 3.5 5.0 0.25 0.688 88.9 127.0 6.35 L5x3x1/2 12.8 3.0 5.0 0.5 0.938 76.2 127.0 12.7 L5x3x7/16 11.3 3.0 5.0 0.4375 0.875 76.2 127.0 11.11 L5x3x3/8 9.8 3.0 5.0 0.375 0.813 76.2 127.0 9.52 L5x3x5/16 8.2 3.0 5.0 0.3125 0.75 76.2 127.0 7.94 L5x3x1/4 6.6 3.0 5.0 0.25 0.688 76.2 127.0 6.35 L4x4x3/4 18.5 4.0 4.0 0.75 1.13 101.6 101.6 19.05 L4x4x5/8 15.7 4.0 4.0 0.625 1.0 101.6 101.6 15.88 L4x4x1/2 12.8 4.0 4.0 0.5 0.875 101.6 101.6 12.7 L4x4x7/16 11.3 4.0 4.0 0.4375 0.813 101.6 101.6 11.11 L4x4x3/8 9.8 4.0 4.0 0.375 0.75 101.6 101.6 9.52 L4x4x5/16 8.2 4.0 4.0 0.3125 0.688 101.6 101.6 7.94 L4x4x1/4 6.6 4.0 4.0 0.25 0.625 101.6 101.6 6.35 L4x3-1/2x1/2 11.9 3.5 4.0 0.5 0.875 88.9 101.6 12.7 L4x3-1/2x3/8 9.1 3.5 4.0 0.375 0.75 88.9 101.6 9.52 L4x3-1/2x5/16 7.7 3.5 4.0 0.3125 0.688 88.9 101.6 7.94 L4x3-1/2x1/4 6.2 3.5 4.0 0.25 0.625 88.9 101.6 6.35 L4x3x5/8 13.6 3.0 4.0 0.625 1.0 76.2 101.6 15.88 L4x3x1/2 11.1 3.0 4.0 0.5 0.875 76.2 101.6 12.7 L4x3x3/8 8.5 3.0 4.0 0.375 0.75 76.2 101.6 9.52 L4x3x5/16 7.2 3.0 4.0 0.3125 0.688 76.2 101.6 7.94 L4x3x1/4 5.8 3.0 4.0 0.25 0.625 76.2 101.6 6.35 L3-1/2x3-1/2x1/2 11.1 3.5 3.5 0.5 0.875 88.9 88.9 12.7 L3-1/2x3-1/2x7/16 9.8 3.5 3.5 0.4375 0.813 88.9 88.9 11.11 L3-1/2x3-1/2x3/8 8.5 3.5 3.5 0.375 0.75 88.9 88.9 9.52 L3-1/2x3-1/2x5/16 7.2 3.5 3.5 0.3125 0.688 88.9 88.9 7.94 L3-1/2x3-1/2x1/4 5.8 3.5 3.5 0.25 0.625 88.9 88.9 6.35 L3-1/2x3x1/2 10.2 3.0 3.5 0.5 0.875 76.2 88.9 12.7 L3-1/2x3x7/16 9.1 3.0 3.5 0.4375 0.813 76.2 88.9 11.11 L3-1/2x3x3/8 7.9 3.0 3.5 0.375 0.75 76.2 88.9 9.52 L3-1/2x3x5/16 6.6 3.0 3.5 0.3125 0.688 76.2 88.9 7.94 L3-1/2x3x1/4 5.4 3.0 3.5 0.25 0.625 76.2 88.9 6.35 L3-1/2x2-1/2x1/2 9.4 2.5 3.5 0.5 0.875 63.5 88.9 12.7 L3-1/2x2-1/2x3/8 7.2 2.5 3.5 0.375 0.75 63.5 88.9 9.52 L3-1/2x2-1/2x5/16 6.1 2.5 3.5 0.3125 0.688 63.5 88.9 7.94 L3-1/2x2-1/2x1/4 4.9 2.5 3.5 0.25 0.625 63.5 88.9 6.35 L3x3x1/2 9.4 3.0 3.0 0.5 0.875 76.2 76.2 12.7 L3x3x7/16 8.3 3.0 3.0 0.4375 0.813 76.2 76.2 11.11 L3x3x3/8 7.2 3.0 3.0 0.375 0.75 76.2 76.2 9.52 L3x3x5/16 6.1 3.0 3.0 0.3125 0.688 76.2 76.2 7.94 L3x3x1/4 4.9 3.0 3.0 0.25 0.625 76.2 76.2 6.35 L3x3x3/16 3.71 3.0 3.0 0.1875 0.563 76.2 76.2 4.76 L3x2-1/2x1/2 8.5 2.5 3.0 0.5 0.875 63.5 76.2 12.7 L3x2-1/2x7/16 7.6 2.5 3.0 0.4375 0.813 63.5 76.2 11.11 L3x2-1/2x3/8 6.6 2.5 3.0 0.375 0.75 63.5 76.2 9.52 L3x2-1/2x5/16 5.6 2.5 3.0 0.3125 0.688 63.5 76.2 7.94 L3x2-1/2x1/4 4.5 2.5 3.0 0.25 0.625 63.5 76.2 6.35 L3x2-1/2x3/16 3.39 2.5 3.0 0.1875 0.563 63.5 76.2 4.76 L3x2x1/2 7.7 2.0 3.0 0.5 0.813 50.8 76.2 12.7 L3x2x3/8 5.9 2.0 3.0 0.375 0.688 50.8 76.2 9.52 L3x2x5/16 5.0 2.0 3.0 0.3125 0.625 50.8 76.2 7.94 L3x2x1/4 4.1 2.0 3.0 0.25 0.563 50.8 76.2 6.35 L3x2x3/16 3.07 2.0 3.0 0.1875 0.5 50.8 76.2 4.76 L2-1/2x2-1/2x1/2 7.7 2.5 2.5 0.5 0.75 63.5 63.5 12.7 L2-1/2x2-1/2x3/8 5.9 2.5 2.5 0.375 0.625 63.5 63.5 9.52 L2-1/2x2-1/2x5/16 5.0 2.5 2.5 0.3125 0.563 63.5 63.5 7.94 L2-1/2x2-1/2x1/4 4.1 2.5 2.5 0.25 0.5 63.5 63.5 6.35 L2-1/2x2-1/2x3/16 3.07 2.5 2.5 0.1875 0.438 63.5 63.5 4.76 L2-1/2x2x3/8 5.3 2.0 2.5 0.375 0.625 50.8 63.5 9.52 L2-1/2x2x5/16 4.5 2.0 2.5 0.3125 0.563 50.8 63.5 7.94 L2-1/2x2x1/4 3.62 2.0 2.5 0.25 0.5 50.8 63.5 6.35 L2-1/2x2x3/16 2.75 2.0 2.5 0.1875 0.438 50.8 63.5 4.76 L2-1/2x1-1/2x1/4 3.19 1.5 2.5 0.25 0.5 38.1 63.5 6.35 L2-1/2x1-1/2x3/16 2.44 1.5 2.5 0.1875 0.438 38.1 63.5 4.76 L2x2x3/8 4.7 2.0 2.0 0.375 0.625 50.8 50.8 9.52 L2x2x5/16 3.92 2.0 2.0 0.3125 0.563 50.8 50.8 7.94 L2x2x1/4 3.19 2.0 2.0 0.25 0.5 50.8 50.8 6.35 L2x2x3/16 2.44 2.0 2.0 0.1875 0.438 50.8 50.8 4.76 L2x2x1/8 1.65 2.0 2.0 0.125 0.375 50.8 50.8 3.17 Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - AISC (values via the ambaker1/aisc-csv extract, MIT): AISC Shapes Database v15.0 (W, S, C, MC, L, HSS): d, bf, tw, tf, k, t, HSS Ht, B, OD, tnom, tdes, A, weight — web — AISC publishes the database free of charge; dimensions are facts. aisc.org itself was not reachable from the build box — https://github.com/ambaker1/aisc-csv - AISC: Shapes Database (free download, v16.0 on aisc.org) - the values here are the v15.0 release; check the current release before relying on a size — web — Publisher's page; dimensions are facts — https://www.aisc.org/publications/steel-construction-manual-resources/ Free files (CC BY 4.0, Xem Studio; STEP + STL, 31 parts): https://xemstudio.com/files/hardware/aisc-l-angles/index.json API: https://xemstudio.com/api/geometry?object=aisc-l-angles