retapped

Retapped refers to the process of re-threading a hole that has had its threads damaged or worn. This is commonly done with a tap, a tool designed to cut internal threads. When a hole is retapped, it means the original threads are no longer functional, and a new set of threads is being created within the same hole. This can be necessary due to overtightening, cross-threading, or general wear and tear over time.

The process typically involves using a tap of the same size and thread pitch as the original. The tap is carefully inserted into the damaged hole and rotated, cutting new threads that conform to the original specification. In some cases, if the original threads are severely damaged, a larger tap might be used to create a new, slightly larger thread, requiring a correspondingly larger fastener. This is a common repair technique in mechanical engineering and DIY repairs to salvage components or fixtures. It allows for the reuse of existing parts, preventing the need for complete replacement. Proper lubrication and a steady hand are important to achieve clean and functional retapped threads.