thread
smooth and low noise
starts
single or multi 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 191 20
color
black or chrome plated ,nickle plated
nut
brass or plastic ,nylon or pom
material
steel ,stainless steel ,plastic ,aluminum ...
direction
right or left handed
standard
JIS,DIN,BSW,GB, ACME
type
custom lead screw, ball screw ,trapezoidal screw,trapezoid screw