ACME Leadscrews
From PROBOTIX :: wiki
Pre-2015
Roton:
60384 1/2” 2-Start Hi-lead ACME Screw (Z-axis)
60986 1/2” 4-Start Hi-lead ACME Screw (X & Y Axis)
19662 1/2” 2-start RH Anti-Backlash Nut (Z-axis, 5 Revs per Inch)
https://www.roton.com/product/hi-lead-plastic-anti-backlash-flange-nut-right-19662/
19664 1/2” 4-start RH Anti-Backlash Nut (X & Y Axis, 2 Revs per Inch)
https://www.roton.com/product/hi-lead-plastic-anti-backlash-flange-nut-right-19664/
2015+
Helix:
RFA050500R 1/2" 5-start Anti-backlash Nut (All axis, 2 Revs per Inch)
050500RA 1/2" 5-start ACME Screw (All axis, 2 Revs per Inch)