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T8 Spring Loaded Anti-Backlash Nut (4pcs)


The Spring Loaded Anti-Backlash Nut is designed to be the successor to the regular T8 Delrin Anti-Backlash Block. The springs are designed to radially load the lead screws to adjust for backlash, leading to smoother movement and no adjustments needed after assembly.

The Spring Loaded Anti-Backlash Nut is made for T8 type 4 start 2mm pitch ACME lead screws like on the LongMill and provides high precision and repeatability with near-zero play or slop in the linear motion. Each set comes with 4 Blocks.

This product is a beta product and not a production-tested product, we will contact customers with an email survey to collect feedback. Please read this article before ordering.


Out of stock


Quantity: 4pcs

Material: Delrin

Threading: T8 8mm 4 start

Pitch: 2mm/rotation


Installation Instructions

For the LongMill to work properly, you should only use one set of nuts at any given time. Make sure to remove the old nuts, keeping all of the nuts and bolts as you will need them to install the new ones

Install nuts on the X, Y, and Z gantry as shown.

Additional information

Weight0.2 lbs
Dimensions4 × 6 × 1 in