From The Anvil Beeswax Screw on Staple Penny End
This can be used with any of the thumb latches as it screws to the door rather than the driven in.
Overall Size: 4 3/4" x 5/8" (120mm x 16mm)
Supplied with necessary fixing screws.
The maintenance wax will restore the finish and afford protection. If surface rust does occur rub with wire wool and apply maintenance wax with a rag or brush. Inevitably when two areas of metal come into contact with each other an abrasive action is enacted, and sooner or later the wax surfaces are lost by the constant rubbing action. This is unavoidable during the operational activity of the article, so where obvious abrasive areas of moving parts are visible an occasional light oiling is recommended.