Airsoft Canada - View Single Post - how to remove the screw with worn thread???

MadMax · February 16th, 2011, 21:37

Man that's bad. I've never seen a screw head that badly gnarled. It looks like you used a power tool on it. At that point I would carefully TIG weld a bit of metal onto it to torque on. If you don't have a TIG welder or don't want to heat it because of connected plastic parts (which would melt) I think your only recourse is to carefully centerpunch a mark in the middle and drill the head off.

Pick a drill bit diameter a little bit larger than the fastener shank. As the drill cuts deeper it will eventually drill out to the shoulder on the head and take the head off. At this point the assembly should come apart which would expose a stub of the screw for you to grip on. Heat the screw to soften any thread locking adhesive (if there is any). If there is no thread locker, the screw should back out with no tension force holding it in. It may help to lightly tap the stub down with a screwdriver handle to shake it loose before cranking on it. I often use a three jaw chuck to grip a screw stub as you can crank them down pretty tight.

February 16th, 2011, 21:37	#22
MadMax Delierious Designer of Dastardly Detonations Trader rating Join Date: Dec 2001 Location: in the dark recesses of some metal chip filled machine shop	Man that's bad. I've never seen a screw head that badly gnarled. It looks like you used a power tool on it. At that point I would carefully TIG weld a bit of metal onto it to torque on. If you don't have a TIG welder or don't want to heat it because of connected plastic parts (which would melt) I think your only recourse is to carefully centerpunch a mark in the middle and drill the head off. Pick a drill bit diameter a little bit larger than the fastener shank. As the drill cuts deeper it will eventually drill out to the shoulder on the head and take the head off. At this point the assembly should come apart which would expose a stub of the screw for you to grip on. Heat the screw to soften any thread locking adhesive (if there is any). If there is no thread locker, the screw should back out with no tension force holding it in. It may help to lightly tap the stub down with a screwdriver handle to shake it loose before cranking on it. I often use a three jaw chuck to grip a screw stub as you can crank them down pretty tight. __________________ Want nearly free GBB gas?