Screw fastener material for aluminum bracket mounted to steel tube
Screw fastener material for aluminum bracket mounted to steel tube
(OP)
I need to attach an aluminum track overhead to a structural steel tube header.
I need to use #12-24 machine screws
What material should I use (and what materials to avoid)?
This is for folding (exterior) doors, hung from above and guided in a track below. Vertical support is at the top tract only.
I've been told to use 316 stainless. I'm hoping that is right but I'm concerned about the SS threads inside the carbon steel tube - 5/8 wall thickness will be drilled and tapped. Can't get thread rolling screws in the size I need 12-24 x 3.5" long)
Does all this sound correct?
Would zinc coated carbon steel be "better"?
Thanks
I need to use #12-24 machine screws
What material should I use (and what materials to avoid)?
This is for folding (exterior) doors, hung from above and guided in a track below. Vertical support is at the top tract only.
I've been told to use 316 stainless. I'm hoping that is right but I'm concerned about the SS threads inside the carbon steel tube - 5/8 wall thickness will be drilled and tapped. Can't get thread rolling screws in the size I need 12-24 x 3.5" long)
Does all this sound correct?
Would zinc coated carbon steel be "better"?
Thanks





RE: Screw fastener material for aluminum bracket mounted to steel tube
RE: Screw fastener material for aluminum bracket mounted to steel tube
Money is not an object and the question of corrosion is paramount so... I appreciate that CS will be less costly but if we are addressing the question of corrosion only, is your rec less corrosive in the 3 material "sandwich"?
In other words, I'm thinking that maybe I have more of a problem between the screw and the carbon steel tube? Is THAT a factor?
RE: Screw fastener material for aluminum bracket mounted to steel tube