La Pavoni Lever Boiler cap base in stainless steel includes heat resistant VITON green O-ring also.
Suitable for personal projects, where the users make their own caps from wood or other materials.
We have the same part but from brass.
Upper thread is M12 x 1.75 mm.
Upper thread length WITHOUT the conical shaped edge: 13.3 mm.
Total length of the upper thread PLUS the conical shaped edge: 18.3 mm.