M Shapes
Welcome to our M shapes free CAD downloads page! Here you'll find all Miscellaneous Beam shapes described by the AISC Steel shapes database (V14.1). Sort the table below according to any property and select a CAD file to download using the reference links in the left-most column.
You can also purchase all our CAD data in one easy download, containing the shapes as individual files or AutoCAD Design Center files - just click here to visit our Shop.
| Imperial Reference | Metric Reference | Nominal Weight | Depth of Section | Width of Section | Web Thickness | Flange Thickness | K Dimension |
|---|---|---|---|---|---|---|---|
| (Click on link to download) | lb/ft (kg/m) | d in (mm) | b in (mm) | tw in (mm) | tf in (mm) | k in (mm) | |
| M 12.5x12.4 | M 318x18.5 | 12.4 (18.5) | 12.5 (318) | 3.75 (95.3) | 0.155 (3.94) | 0.228 (5.79) | 0.563 (14.3) |
| M 12.5x11.6 | M 318x17.3 | 11.6 (17.3) | 12.5 (318) | 3.50 (88.9) | 0.155 (3.94) | 0.211 (5.36) | 0.563 (14.3) |
| M 12x11.8 | M 310x17.6 | 11.8 (17.6) | 12.0 (305) | 3.07 (78.0) | 0.177 (4.50) | 0.225 (5.72) | 0.563 (14.3) |
| M 12x10.8 | M 310x16.1 | 10.8 (16.1) | 12.0 (305) | 3.07 (78.0) | 0.160 (4.06) | 0.210 (5.33) | 0.563 (14.3) |
| M 12x10 | M 310x14.9 | 10.0 (14.9) | 12.0 (305) | 3.25 (82.6) | 0.149 (3.78) | 0.180 (4.57) | 0.500 (12.7) |
| M 10x9 | M 250x13.4 | 9.00 (13.4) | 10.0 (254) | 2.69 (68.3) | 0.157 (3.99) | 0.206 (5.23) | 0.563 (14.3) |
| M 10x8 | M 250x11.9 | 8.00 (11.9) | 9.95 (253) | 2.69 (68.3) | 0.141 (3.58) | 0.182 (4.62) | 0.563 (14.3) |
| M 10x7.5 | M 250x11.2 | 7.50 (11.2) | 9.99 (254) | 2.69 (68.3) | 0.130 (3.30) | 0.173 (4.39) | 0.438 (11.1) |
| M 8x6.5 | M 200x9.7 | 6.50 (9.70) | 8.00 (203) | 2.28 (57.9) | 0.135 (3.43) | 0.189 (4.80) | 0.563 (14.3) |
| M 8x6.2 | M 200x9.2 | 6.20 (9.20) | 8.00 (203) | 2.28 (57.9) | 0.129 (3.28) | 0.177 (4.50) | 0.438 (11.1) |
| M 6x4.4 | M 150x6.6 | 4.40 (6.60) | 6.00 (152) | 1.84 (46.7) | 0.114 (2.90) | 0.171 (4.34) | 0.375 (9.53) |
| M 6x3.7 | M 150x5.5 | 3.70 (5.50) | 5.92 (150) | 2.00 (50.8) | 0.0980 (2.49) | 0.129 (3.28) | 0.313 (7.95) |
| M 5x18.9 | M 130x28.1 | 18.9 (28.1) | 5.00 (127) | 5.00 (127) | 0.316 (8.03) | 0.416 (10.6) | 0.813 (20.7) |
| M 4x6 | M 100x8.9 | 6.00 (8.90) | 3.80 (96.5) | 3.80 (96.5) | 0.130 (3.30) | 0.160 (4.06) | 0.500 (12.7) |
| M 4x4.08 | M 100x6.1 | 4.08 (6.10) | 4.00 (102) | 2.25 (57.2) | 0.115 (2.92) | 0.170 (4.32) | 0.563 (14.3) |
| M 4x3.45 | M 100x5.1 | 3.45 (5.10) | 4.00 (102) | 2.25 (57.2) | 0.0920 (2.34) | 0.130 (3.30) | 0.500 (12.7) |
| M 4x3.2 | M 100x4.8 | 3.20 (4.80) | 4.00 (102) | 2.25 (57.2) | 0.0920 (2.34) | 0.130 (3.30) | 0.500 (12.7) |
| M 3x2.9 | M 100x4.3 | 2.90 (4.30) | 3.00 (76.2) | 2.25 (57.2) | 0.0900 (2.29) | 0.130 (3.30) | 0.500 (12.7) |