T8 Lead Screw Dia 8MM Pitch 2mm Lead 2mm Length 345mm with Copper Nut printer part
 
Feature:
3D engraving machine lead screw 345mm length with nut.
Nut turn an around move 8mm. 
 
Our screw's material is 304 stainless steel trial:
304 stainless steel rust resistance is more stronger than the 200 series stainless steel  
304 stainless steel  resistance 1000-12000 degree high temperature
It has excellent corrosion resistance of stainless steel and good resistance to intergranular corrosion
Market in order to save costs, they use poor quality 200 series stainless steel, the material shortcomings of this series are:
Chromium content of 18% or less and a low nickel content reach equilibrium, the corrosion resistance can not be compared with the 304 and other similar steel, rust, rusty screw on the 3D printer to run the slide will create a variety of adverse effects of a lot of resistance, even Caton, etc.
Our product uses a screw in accordance with the ASTM standard production out of stainless steel, good corrosion resistance and long service life
 
Specification: 
Material Stainless steel lead screw, brass nut
Screw diameter 8mm
Length 345mm
Screw spacing 2mm
Lead of thread 8mm
Range Reprap makerbot 3d printer accessories

Packaging List: 2pcs 345mm lead screws + 2pcs free 8mm brass nuts