This ISO Recommendation defines the characteristics of glass finishes with external screw threads and provides a method of inspecting the corresponding screw closures.
It applies to
- shallow finishes with continuous thread of one or more starts;
- tall finishes with single start continuous thread.
IS ISO/R 1115:1969 history
1971IS ISO/R 1115:1969 ISO recommends R 1115 external thread surface treatment for glass containers and gauges used to check screw closures