2PCS 400mm（15.75 Inches）Tr8x8 Lead Screw with T8 Brass Nut (Acme Thread, 2mm Pitch, 4 Starts, 8mm Lead) for LCD DLP SLA 3D Printer Z Axis and CNC Machine
Condition: New
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Availability:
In Stock.
Arrives
Monday, Jul 20
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Size: 400mm
Style: 2pcs Tr8X8
Features
- Material: SUS304 Stainless steel lead screw + copper nut
- Lead Screw Length: 400mm;Lead Screw Diameter:8mm
- Screw pitch: 2mm; Lead: 8mm
- Thread: Acme thread,Copper nut:with 4 holes for fixing to the machine .
- WHAT YOU GET: 2pcs 400mm Tr8x8 Lead Screw With T8 Brass Nut. 30-Days money back guarantee, 1-Year warranty, 24/7 friendly customer service.
Package Dimensions: 16.5 x 1.73 x 0.98 inches
Item Weight: 10.5 ounces
Manufacturer: VI-CHAN
Item model number: LMLS-T8
Date First Available: September 22, 2020
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Jul 20
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Perfect for my 3d printer .
Reviewed in the United States on May 17, 2026 by Todd
Size: 400mm
Style: 2pcs Tr8X2
I used one of these to replace the Z-screw on my Ender 5 pro, and surprisingly its actually quite high quality. I expected them to possibly be curved but they are perfectly straight as far as I can tell. Also, the quality of the machining seems higher than the one that came with my Ender 5. I didn't use the included anti-backlash nuts though. I purchased some 2 part Delrin ones that had springs on them.
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Reviewed in the United States on May 24, 2021 by Chris
Size: 400mm
Style: 2pcs Tr8X8
Had some trouble getting installed on my neptune 4 pro, but I now believe thats is entirely user error. Have been printing for about a month now and no issues.
Reviewed in the United States on May 25, 2025 by Mitchell Rogers
It worked pretty well as designed. But I ended up going with a ball screw anyway. Really, if you're upgrading, just go ball screw if you can. If you're just replacing it. this would be a good buy.
Reviewed in the United States on October 31, 2025 by Microguy
Size: 450mm
Style: 2pcs Tr8X8
Llegaron en buen estado, me salvó la vida en mi ender 3 V3 SE
Reviewed in the United States on February 6, 2026 by Carlos Rodriguez
Size: 400mm
Style: 2pcs Tr8X2
My Ender 3 Pro came with a single T8-8mm lead screw. These are T8 2mm lead screws, which means that you will have more steps to move 1mm up or down and there should be less backlash as well as better torque which translates to the ability to have additional mass on the X axis without detriment to velocity (should not be a LOT o velocity in Z moves anyway). The standard lead screws for an Ender 3 is 365mm, these are a little longer which will allow longer verticals to be installed. My direct drive Ender 3 Pro now has a Z max height of nearly 300mm despite the stepper motor being in the way. ETA: Swapped the DD for a Orbiter v1.5 and it no longer gets in the way of the crossbeam at the top of my Z axis, now my build height is 320mm! ***** Also, for Klipper users, this has a rotational distance of 2, not 8 like a 4-start screw *****
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Reviewed in the United States on March 22, 2021 by Erik in MO
Size: 400mm
Style: 2pcs Tr8X2
works perfectly and is dead straight
Reviewed in the United States on May 20, 2025 by Cody Werdal
Size: 400mm
Style: 2pcs Tr8X8
I purchased these to increase the Z Height on my Ender 3 Pro. When I received them, they were both slightly bent. The bend was enough to cause binding on the upward travel of my Ender 3 Pro gantry. I laid them flat and rolled them until I could see a gap. One gap measured 1.7mm and the other measured 2mm. Making both lead screws unusable. Poor Quality control, soft metal that allows them to easily bend. The lead screw nuts were fine and if perfect condition. Sadly, I had them sitting on a shelf, and was not able to return them since they were outside the return window. I do NOT recommend purchasing this because the Quality Control is just not up to par on such a vital part of a 3D printer.
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Reviewed in the United States on July 22, 2023 by THE 300LB GORILLA