Internal thread: M3 x 1 (fine thread).
|Outer Diameter (cm):||1.0 (0.39 inch)|
|Diameter of opening (cm):||1.3 (0.12 inch) M3 x 1|
Gold coloured copper cap, 1.0 cm (0.39 inch) diameter.
The sphere (ball) has internal thread, M3x1 (0.12 inch).
For example, can be used as a finish on protruding thread ends.
Here you will find a similar cover cap (sphere) with M4x1 (0.16 inch) screw thread.