We are the manufacturers of ACME threaded screws, ACME rods and nuts. We have been producing these items for over 50 years. We stock all standard sizes along with many non-standard sizes, also LEFT HAND Thread, 3/8" to 2 1/2" Diameter. We ship most orders same day via U.P.S. We can also custom manufacture to your specs. We offer Cut Thread ACME screws in low carbon steel, 4140 Heat Treated alloy and Stainless Steel. Out hex nuts are stocked in low carbon steel, Stainless Steel, Brass, Bronze and 4140 annealed materials. We can offer most sizes in round and square nuts also. We again can manufacture to your specs.