0
votes
0answers
37 views

How I can remove this Ingersoll window bolt?

I have a small window with security bolts which have become rusted and unusable. However, I can't see how to remove them without forcing them off and damaging the wood. Anyone seen these types before ...
6
votes
3answers
1k views

What is this kind of security bolt head called, and how can I remove it?

A previous owner fitted the light fitting pictured above, and has not left me a tool to remove the bolt. The bulb has blown so I need to get in to the unit. The head diameter is about 12mm and the ...