Brighton Best's 1-1/2 in.-6 Heavy 2H Plain Coarse Hex Nuts (30 Pack) feature a plain, uncoated carbon steel finish for applications where additional corrosion protection is not required or where the assembly will receive a separate protective treatment. Grade 2H construction is intended for demanding fastening applications requiring a high-strength nut, while the coarse 6-TPI thread provides straightforward engagement with compatible 1-1/2 in.-6 bolts and studs. These heavy hex nuts are well suited for structural steelwork, equipment assembly, industrial maintenance and other heavy-duty fastening applications.