Precision Lead Screw, Nut Type Anti-Backlash, Coating Material PTFE, Screw Material Stainless Steel, Screw Material Grade 300, Nut Shape Round, Screw Diameter 12 mm, Lead Length 5 mm, Screw Length 254 mm, Nut Length 44.5 mm, Nut Flange Diameter 44.5 mm, Nut Dynamic Load Capacity 703 N, Assembly Type Lead Screw and Nut Assembly, Nut Bolt Circle Diameter 35.7 mm, Nut Diameter 16.9 mm, Nut Flange Thickness 6.4 mm