Key benefits Precise linear motion: T12 lead screw converts rotary motion to controlled linear travel, making it suitable for positioning, lifting, and actuation tasks. Durable, corrosion-resistant construction: spindle made from stainless steel 304 for long service life in workshop and light industrial environments. Stable nut interface: included copper nut provides a reliable mating surface for repeated travel cycles. Multiple lead options for speed vs. resolution: choose the lead that fits your application (higher lead = faster travel, lower lead = finer positioning). Specifications Lead options (lead per revolution): 2 mm / 4 mm / 8 mm / 10 mm / 12 mm / 14 mm Threaded-rod diameter (T12): 12 mm Thread pitch: 2 mm Spindle material: Stainless Steel 304 Nut material: Copper Package contents: 1 x T12 lead screw spindle + 1 x copper nut How this product solves problems Eliminates slop and provides repeatable positioning compared with low-quality rods or improvised linear guides. Offers a choice of leads so you can tune the trade-off between travel speed and positional resolution for different tasks. Stainless steel 304 resists corrosion and wear in many environments, reducing replacement frequency and downtime. The copper nut gives a consistent mating surface and simple integration into existing assemblies. Compatibility and installation notes Designed as a standard T12 lead screw: 12 mm diameter and 2 mm thread pitch; confirm compatibility with your couplers, bearings, and supports. Select the lead (2–14 mm) that matches your motor gearing and control requirements. Typical installation requires standard T12 mounting supports, end bearings, and a compatible motor coupler (not included). Typical applications Desktop CNC machines and 3D printers: precise Z-axis or linear stage movement where reliability and repeatable positioning matter. Small linear actuators and robotics: controlled linear travel for grippers, slides, or positioning assemblies. Material feeders and camera sliders: repeatable, smooth motion for short to medium stroke applications. What you get One T12 lead screw spindle (stainless steel 304) and one copper nut; ready to mount into your mechanical assembly. If you need a specific lead for your speed or resolution goals, select the appropriate option (2 / 4 / 8 / 10 / 12 / 14 mm) and verify your system accepts a 12 mm T12 rod with 2 mm thread pitch.