Uxcell 2Pcs TR8x4 Lead Screw 350mm With Brass Nut - 304 Stainless Steel, 2mm Pitch, 4mm Lead For 3D Printer/CNC

Upgrading your 3D printer or CNC machine?

These precision lead screws could be just what you need.

You get 2 pieces, each 350mm (about 13.78 inches) long, made from durable 304 stainless steel that resists rust.

They have an ACME thread profile with a Tr8x4 specification: that's an 8mm outer diameter, a 2mm pitch, 2 starts, and a 4mm lead (meaning the nut travels 4mm per full revolution).

Each screw comes with a matching brass nut.

The design aims to minimize friction for smoother, more precise movement.

They even ship in a protective PP plastic tube to prevent damage, which you can reuse for storage.

To install, you'd typically secure the screw with bearings or brackets, then attach the nut (which has four mounting holes) to your moving gantry or tool head.

Perfect for improving Z-axis accuracy on printers or enabling precise linear motion in DIY CNC builds.

A solid, versatile component for makers and tinkerers.