Repair 7

How to Remove a Key Lock Threaded Insert

Key lock inserts use evenly spaced metal "keys" to lock the insert in material. The "keys" bind to the base material when set with a specified tool. Threading a tap into a key locked insert will not fix damaged threads. Correctly removing the damaged insert will keep the threads in the base material intact, reducing the time required to install a new key lock insert.

Instructions

1

Find the size of the key lock threaded insert on a key lock chart. Move across the chart to determine the drill bit size required to remove the insert.

2

Secure the proper drill bit in a drill motor chuck. Cover the drill bit with cutting fluid.

3

Drill into the threaded insert to the depth specified on the key lock chart.

4

Slide a flathead screwdriver into the threaded insert. Align the tip of the screwdriver with one of the key locks. Pry the remaining portion of each key lock toward the center of the insert.

5

Secure a spiral bolt extractor into the drill motor chuck. Set the drill to reverse. Insert the extractor into the opening of the threaded insert. Push the drill toward the threaded insert while pulling the drill trigger to remove the insert from the threaded base material.