Acme or trapezoidal? What's the difference between lead screw designs?
Trapezoidal Screws: Four Critical Design Considerations | Helix Linear Technologies
Trapezoidal thread spindles by NEFF: Neff Gewindetriebe
Acme Screws - Rockford Ball Screw
Trapezoidal Screw Jacks | Unimec North America
Amazon.com: T10 Lead Screw Length 100-1000mm Pitch 2mm Lead 12mm Trapezoidal Screws with Nut for 3D Printers Parts, 1pcs (Size : 1000MM With Nut) : Industrial & Scientific