Powder coating wood screws

[PT Doc]

Hi all. Need help from the GJ brain trust.

Im having my black deck railing re powder coated along with the brackets. Let’s just say the painters that were hired didn’t mask off and thought that painting in wind was a good idea.

I will need to reinstall my black metal deck railing that was installed with specialty brackets and 5/16” wood screws. Lengths varied between 1.5” to 3” but that’s not really relevant. I broke a screw today when removing them and don’t want to use the same screws. Don’t want any more issues.

If I bought new woods screws from Home Depot and had them powder coated at the same time the railing and brackets were redone, is there any issue with the heat of the powder coating process weakening the wood screws. I’m not going to growl on the screws on install since the head can damage the brackets, so they will be installed reasonably.

Im trying to prevent a problem by getting new screws and don’t want an issue having made an assumption that the powder coating would not effect the screws.

Thanks in advance for the help! I greatly appreciate it.

 

[cjarvis]

Just a somewhat educated guess here, but powder coat curing temps are lower than tempering temps used in heat treating steel, so you should be fine.

 

[tarbellb]

No, screws will be fine, powder coating happens at ~400* degrees

Also, shop around, you may very well find a better pre painted option that matches. Did you know they make black SS fasteners, food for thought.

 

[Higgins]

Hi all. Need help from the GJ brain trust.

Im having my black deck railing re powder coated along with the brackets. Let’s just say the painters that were hired didn’t mask off and thought that painting in wind was a good idea.

I will need to reinstall my black metal deck railing that was installed with specialty brackets and 5/16” wood screws. Lengths varied between 1.5” to 3” but that’s not really relevant. I broke a screw today when removing them and don’t want to use the same screws. Don’t want any more issues.

If I bought new woods screws from Home Depot and had them powder coated at the same time the railing and brackets were redone, is there any issue with the heat of the powder coating process weakening the wood screws. I’m not going to growl on the screws on install since the head can damage the brackets, so they will be installed reasonably.

Im trying to prevent a problem by getting new screws and don’t want an issue having made an assumption that the powder coating would not effect the screws.

Thanks in advance for the help! I greatly appreciate it.

Na, did that over 15 yrs ago for a deck and everything is fine !!!

AL

 

[seber]

I do my powder coating at 300f in an old toaster oven. Do a search on powder coating bullets and you can do it yourself.
I need to correct that. I checked the temp with a non contact thermometer and it is actually over 400 degrees.

 

[PT Doc]

Thanks for the help. The 5/16” wood screws have 1/2” hex heads.

The tremendous over spray was attempted to be removed. Either it requires solvents to speed up the process or lots of mechanical abrasion. Either way the outer surface will be compromised as a result. This will cause a problem years down the road. The painters caused this problem and recommended redoing the railing. So that is how we are proceeding.

Black railings, with black brackets and black screw heads make sense. Stainless would stick out too much. The previous screws had the heads painted with Cardinal spray paint. They make the powder used in powder coating. It help up well but a socket on a painted head does damage it a bit. I’ll ask for a can of this spray paint and use it as touch up for the heads after install.

Ill verify the screw integrity with powder coating company.

Might try to use the next size larger socket and place some tape on the inside to try to make the interface between socket and hex head a bit softer.

Thank you for the help.

 

[CudaChick1968]

Most powders cure around 375-400 degrees so you don't have to worry about metallurgy.

I'd recommend dipping your oversized socket in plastic dip once or twice to help minimize any damage when you install it. When it's done right, powder coating is more durable and flexible than paint but it's not totally indestructible.