ACME THREADED ROD Technical Specification Specifications of acme threaded rods include 1/2-10 ft. to 2-4 ft. dia., 12 ft. length, 0.375 to 2.250 maximum flange dia., 0.365 to 2.224 flange dia., 0.058 to 0.433 flange thickness & 1.000 to 3.5000 thread length. Acme threaded rods are made from stainless & carbon steel materials with plain finish. Features Specifications of acme threaded rods include 1/2-10 ft. to 2-4 ft. dia., 12 ft. length, 0.375 to 2.250 maximum flange dia., 0.365 to 2.224 flange dia., 0.058 to 0.433 flange thickness & 1.000 to 3.5000 thread length. Acme threaded rods are made from stainless & carbon steel materials with plain finish.