8mm Metric Lead Screw / ACME

This precision trapezoidal(metric) lead screw’s pitch and diameter are a perfect combination of high torque and speed.  This screw fits the bill for most machine designs and has become a standard on Maker Store.


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This 8mm Metric Lead Screw / ACME has an accuracy of 0.05-0.10mm or better. Leadscrew machines are designed to be accurate,  strong and reliable. Leadscrew transmission requires little ongoing maintenance, with nut-blocks often having a functional life of longer than 3 years if the machine is taken care of.

All of our Leadscrews are ACME thread TR8x8(P2), in basic terms, this means one revolution of the leadscrew will make a nut-block travel four times further than a standard threaded rod which is only a single start.

Furthermore, this precision trapezoidal (metric) lead screws’ pitch and diameter are a perfect combination of high torque and speed.

8mm Metric Lead Screw / ACME is the standard for the OpenBuilds’ style CNC Machines. Equipped with a large diameter that helps eliminate whipping and a high pitch that allows quick moves at 8mm per revolution.  It’s a great power transmission choice for your next build.

  • – Tr8*8(P2)
  • – Lead Screw Diameter ∅ 8 (mm)
  • – Pitch 2 (mm)
  • – Lead 8 (mm)
  • – 4 Start
  • – 1540mm, 1040mm, 1000mm, 540mm, 520mm, 300mm or 290mm Length

Use with the V-Slot Nut Plate and Nut Block


Trapezoidal threads are defined as follows by ISO standards:


where Tr designates a trapezoidal thread, 8 is the nominal diameter in millimeters, and 8 is the pitch in millimeters. When there is no suffix it is a single start thread. If there is a suffix then the value after the multiplication sign is the lead and the value in the parentheses is the pitch. For example:


denotes 4 starts (as the lead divided by the pitch is 4), 8mm diameter, 8mm lead and 2mm pitch.

Modified from:

Additional information
Weight 1 kg
Dimensions 100 × 1 × 1 cm

281mm, 290mm, 300mm, 520mm, 540mm, 1000mm, 1020mm, 1040mm, 1057mm, 1070mm, 1540mm, 1557mm, 1570mm

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