3M font here refers to the font used in the logo of 3M, which is an American multinational corporation founded in 1902. 3M brands include Scotch adhesive tapes, Post-it notes, Nexcare etc.
The font used for the 3M logo is Helvetica Black designed by Max Miedinger. The font is a commercial one and you can view more details about it here.
Download Helvetica Font
The Helvetica font identified above is not available for free, please follow the link above and purchase the font. Meanwhile, you can take a look at our collection of fonts for cars, pop music and apparel as well as round-ups of new & fresh fonts around the web.