Installing Screws into Galvanized Steel
Installing Screws into Galvanized Steel
(OP)
Is it okay to install galvanized screws into galvanized base metal? Or does this cause potential corrosion issues?
I'm planning to do this with a small gasket between the screw head and the base metal in an attempt to limit moisture ingress into the screw hole.
I know this is a no-no for field drilling full sizee bolt holes into galvanized steel. My gut tells me that some small screws would be okay though.
Any thoughts?
I'm planning to do this with a small gasket between the screw head and the base metal in an attempt to limit moisture ingress into the screw hole.
I know this is a no-no for field drilling full sizee bolt holes into galvanized steel. My gut tells me that some small screws would be okay though.
Any thoughts?






RE: Installing Screws into Galvanized Steel
I have a publication here that states : "while chasing or retapping nuts after galvanizing results in an uncoated female thread, the coating on the engaged male thread will protect both components from corrosion".
In the case of a self tapping screw, however, my guess would be running the screw in will ruin the galvanizing on the male component also.
RE: Installing Screws into Galvanized Steel
RE: Installing Screws into Galvanized Steel
RE: Installing Screws into Galvanized Steel
RE: Installing Screws into Galvanized Steel
American Galvanizers Association
I think it can be had for free on line.
RE: Installing Screws into Galvanized Steel
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RE: Installing Screws into Galvanized Steel
RE: Installing Screws into Galvanized Steel
RE: Installing Screws into Galvanized Steel
The theoretically ungalvanised edge doesn't seem to suffer from premature corrosion.
RE: Installing Screws into Galvanized Steel
Much appreciated, Dik
RE: Installing Screws into Galvanized Steel
There is a lot of little things to get right when you get to the detailing portion of a job involving galvanized assemblies.
RE: Installing Screws into Galvanized Steel
Dik