National Hardware's 1/2"-13 x 12" Steel Threaded Rod is designed for hanging, connecting, clamping, and supporting in plumbing, heating and electrical applications and other do-it-yourself projects. Consists of UNC coarse threads Can be drilled, cut, heated, or shaped For interior applications Safe working load of 3,100 lbs Manufactured from steel Consists of UNC coarse threads Can be drilled, heated, shaped, etc