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 on the Shop button in the navigation above.

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)