--- product_id: 253452932 title: "2-Pack CR10 Z axis T8 Anti Backlash Spring Loaded Nut Elimination Gap Brass Nuts for Upgrade Ender 3 Ender 3s Ender 3 Pro V2 CR-10 Tornado 3D Printer 8mm Acme Threaded Rod (Nuts)" brand: "polisi3d" price: "£10.52" currency: GBP in_stock: true reviews_count: 8 url: https://www.desertcart.co.uk/products/253452932-2-pack-cr10-z-axis-t8-anti-backlash-spring-loaded store_origin: GB region: United Kingdom --- # 2mm Pitch 8mm Lead Screw 4 Starts 2-Pack CR10 Z axis T8 Anti Backlash Spring Loaded Nut Elimination Gap Brass Nuts for Upgrade Ender 3 Ender 3s Ender 3 Pro V2 CR-10 Tornado 3D Printer 8mm Acme Threaded Rod (Nuts) **Brand:** polisi3d **Price:** £10.52 **Availability:** ✅ In Stock ## Summary > 🔧 Upgrade Your Print Precision! ## Quick Answers - **What is this?** 2-Pack CR10 Z axis T8 Anti Backlash Spring Loaded Nut Elimination Gap Brass Nuts for Upgrade Ender 3 Ender 3s Ender 3 Pro V2 CR-10 Tornado 3D Printer 8mm Acme Threaded Rod (Nuts) by polisi3d - **How much does it cost?** £10.52 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/253452932-2-pack-cr10-z-axis-t8-anti-backlash-spring-loaded) ## Best For - polisi3d enthusiasts ## Why This Product - Trusted polisi3d brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Easy Installation:** Designed for a seamless fit, these nuts make upgrading your printer a breeze. - • **Eliminate Backlash:** Experience enhanced accuracy and reliability with anti-backlash technology. - • **Perfect Compatibility:** Tailored for Ender 3, 3S, 3 Pro, V2, and CR-10 Tornado models. - • **Durable Brass Construction:** Built to last, ensuring your 3D printer performs at its best for years to come. - • **Upgrade Your 3D Printing Game:** Transform your Ender 3 series with precision-engineered brass nuts for smoother operation. ## Overview This 2-Pack of CR10 Z Axis T8 Anti Backlash Spring Loaded Nut Elimination Gap Brass Nuts is designed for 3D printers like the Ender 3 series and CR-10 Tornado. With an 8mm lead screw diameter and 2mm pitch, these durable brass nuts enhance printing accuracy and reliability, making them an essential upgrade for any serious 3D printing enthusiast. ## Description 2-Pack CR10 Z axis T8 Anti Backlash Spring Loaded Nut Elimination Gap Brass Nuts for Upgrade Ender 3 Ender 3s Ender 3 Pro V2 CR-10 Tornado 3D Printer 8mm Acme Threaded Rod (Nuts) ## Features - Lead Screw Diameter: 8mm, Pitch: 2mm, Lead of thread: 8mm; two small M3 holes centre distance is 18mm - 8mm lead T8 lead screw is with 4 starts. - Package: 2 set T8x8 anti-backlash Brass nuts ## Product Details - **Material:** Brass - **Thread Size:** M4 - **Grade Rating:** Grade B7 - **Thread Coverage:** Fully Threaded - **Exterior Finish:** Plain ## Images ![2-Pack CR10 Z axis T8 Anti Backlash Spring Loaded Nut Elimination Gap Brass Nuts for Upgrade Ender 3 Ender 3s Ender 3 Pro V2 CR-10 Tornado 3D Printer 8mm Acme Threaded Rod (Nuts) - Image 1](https://m.media-amazon.com/images/I/610CJFPUZAL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Don't think these are plug and play....Do not loosen the lead screw nut screws! *by M***E on March 11, 2022* The media could not be loaded. This lead screw nut is too long to expect it to bolt right in and work 100% of the time. It will work with everything tight though, I even attached a picture of the screws being tight and a video showing there is no binding. If you need to loosen anything and leave it loose you need to address the problem with the printer not blame the nuts....don't be a hack...Loosing the screws that hold in this nuts is NOT the solution. If you are loosing the lead screw nuts screws to reduce/eliminate binding then you effectively just moved the slop in the nut to slop in the screws.First when you install these nuts, they will feel very tight almost like the thread pitch is wrong, it is not. Just use a bit of force the thread pitch is fairly steep it will be difficult to actually cross them them. Its brass so it will conform to the steel lead screw. Dry fit them on the lead screw off the printer and verify you can spin the assembled nut up and down the lead screw. Once you verify that you know it works and other problems need to be addressed separately.With the lead screw off, the gantry should want to slam into the printer bed. If it doesn't you need to adjust the rollers on it so it does. But you want to also want to verify the they aren't too loose. There is a step at the end I use to perfect this adjustment. If the gantry binds at certain points you need to loosen the vertical rails from the base of the machine, move the gantry to the bottom and retighten it. That will insure the spacing is good. Then loose the vertical rails at the top move the gantry to the top and retighten them.This is the most critical and difficult step. When you install the lead screw into the nut when it clears the nut by a 1/4" or so make sure you have the gantry as low as it will go and thread in the lead screw the rest of the way. It needs to be perfectly aligned with the z dimension stepper motor and freely drop into the coupling. If it does not then you can expect it to bind.To correct that sometimes its simple. Run the lead screw into the z dimension coupler and loosen the screws on the lead screw nut, wiggle everything and retighten them. Then loosen where the stepper bolts to the rail (horizontal screws) wiggle everything and retighten them.Worst case the bracket holding the screw screw nut (near the x dimension step) might need a slight tweak to make sure its pointing precisely at the stepper.Back to the rollers I mentioned above.. Tighten them to the point there is no slop but you can still force one wheel to spin against the rail. One of them should be able to spin with a bit of effort freely. This way you know it has good pressure to hold tight but not so tight its producing friction.I've used tons of these nuts and some printers they work with no effort, others have annoying required all the above steps. ### ⭐⭐⭐⭐⭐ Easy to install and fits well. *by I***R on January 6, 2025* I had occasional problems with the x-axis dropping after disabling the z-axis stepper motor. The device fit my Ender 3 printer nicely and was not difficult to install. I have not observed any z-axis slippage since installing the device, but it has not been installed long enough to be sure. ### ⭐⭐⭐⭐⭐ Tight fit at first. *by P***L on May 18, 2022* Fits the stock z-axis bracket fine, but had a slight fitment issue with my second z-axis bracket. Filed the holes a bit bigger on the second bracket and it fit fine.Nuts might seem like they dont fit the lead screws at first. May take some persuasion to get them to seat into the threads on the lead screws. ## Frequently Bought Together - 2-Pack CR10 Z axis T8 Anti Backlash Spring Loaded Nut Elimination Gap Brass Nuts for Upgrade Ender 3 Ender 3s Ender 3 Pro V2 CR-10 Tornado 3D Printer 8mm Acme Threaded Rod (Nuts) - Befenybay 2PCS 5mm to 8mm Aluminium Plum Flexible Shaft Coupling D20 L25 Connector Flexible Coupler for 3D Printer CNC Machine and Servo Stepped Motor --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/253452932-2-pack-cr10-z-axis-t8-anti-backlash-spring-loaded](https://www.desertcart.co.uk/products/253452932-2-pack-cr10-z-axis-t8-anti-backlash-spring-loaded) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-21*