Hollow tube, so you can pull the lamp wire through.
External thread 1.0 cm (0.39 inch) M10 x 1
|Material:||metal - galvanised|
|Length (cm):||1.5 (0.6 inch)|
|Outer Diameter (cm):||1.0 (M10) 0.39 inch|
|Wire:||M10 x 1 (metric fine thread)|
Metal threaded end, 1.5 cm, 0.6 inch long, with M10x1 thread.
This is a hollow (0.7 cm, 0.28 inch) wire end, so you can easily pull a piece of cord through it.
Hollow threaded end has all kinds of applications when you work with lighting.
One of these is attaching a suspension eye and a fitting together, for example.
Copper threaded rod of 1.5 cm (0.6 inch) can be found here.