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 and 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 12.5x12.4M 318x18.512.4 (18.5)12.5 (318)3.75 (95.3)0.155 (3.94)0.228 (5.79)0.563 (14.3)
M 12.5x11.6M 318x17.311.6 (17.3)12.5 (318)3.50 (88.9)0.155 (3.94)0.211 (5.36)0.563 (14.3)
M 12x11.8M 310x17.611.8 (17.6)12.0 (305)3.07 (78.0)0.177 (4.50)0.225 (5.72)0.563 (14.3)
M 12x10.8M 310x16.110.8 (16.1)12.0 (305)3.07 (78.0)0.160 (4.06)0.210 (5.33)0.563 (14.3)
M 12x10M 310x14.910.0 (14.9)12.0 (305)3.25 (82.6)0.149 (3.78)0.180 (4.57)0.500 (12.7)
M 10x9M 250x13.49.00 (13.4)10.0 (254)2.69 (68.3)0.157 (3.99)0.206 (5.23)0.563 (14.3)
M 10x8M 250x11.98.00 (11.9)9.95 (253)2.69 (68.3)0.141 (3.58)0.182 (4.62)0.563 (14.3)
M 10x7.5M 250x11.27.50 (11.2)9.99 (254)2.69 (68.3)0.130 (3.30)0.173 (4.39)0.438 (11.1)
M 8x6.5M 200x9.76.50 (9.70)8.00 (203)2.28 (57.9)0.135 (3.43)0.189 (4.80)0.563 (14.3)
M 8x6.2M 200x9.26.20 (9.20)8.00 (203)2.28 (57.9)0.129 (3.28)0.177 (4.50)0.438 (11.1)
M 6x4.4M 150x6.64.40 (6.60)6.00 (152)1.84 (46.7)0.114 (2.90)0.171 (4.34)0.375 (9.53)
M 6x3.7M 150x5.53.70 (5.50)5.92 (150)2.00 (50.8)0.0980 (2.49)0.129 (3.28)0.313 (7.95)
M 5x18.9M 130x28.118.9 (28.1)5.00 (127)5.00 (127)0.316 (8.03)0.416 (10.6)0.813 (20.7)
M 4x6M 100x8.96.00 (8.90)3.80 (96.5)3.80 (96.5)0.130 (3.30)0.160 (4.06)0.500 (12.7)
M 4x4.08M 100x6.14.08 (6.10)4.00 (102)2.25 (57.2)0.115 (2.92)0.170 (4.32)0.563 (14.3)
M 4x3.45M 100x5.13.45 (5.10)4.00 (102)2.25 (57.2)0.0920 (2.34)0.130 (3.30)0.500 (12.7)
M 4x3.2M 100x4.83.20 (4.80)4.00 (102)2.25 (57.2)0.0920 (2.34)0.130 (3.30)0.500 (12.7)
M 3x2.9M 100x4.32.90 (4.30)3.00 (76.2)2.25 (57.2)0.0900 (2.29)0.130 (3.30)0.500 (12.7)