Acme Screw – 4140 – Alloy Steel Material, 1.2500 in Nominal Screw Diameter, 36 in Long, Left Hand Thread Direction | 51124

51124 ACME SCR 1-1/4-4 LH 3 FT Nook Industries Offers the largest selections of rolled amce screw sizes in the industry. Rolled thread screws are cost effective and are stocked for quick delivery PowerAc Inch Acme screws and nuts include a centralizing (C) thread form to prevent wedging and binding. When compared to general-purpose thread forms , centralizing threads are manufactured with tighter tolerances and reduced clearance on the major diameter.