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rust-proof solution for attaching 2x4 to 4x4?

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1

What screws can I use to securely attach a 2"x4" to a 4"x4" treated lumber? The solution would need to be rust-proof.

I recently used a structure similar to the image below for a small fence, but some of the screws are completely full of rust, due to treated wood humidity and the environment. I have to change that.

I was thinking of screws but any other solution is appreciated.

wood screws rust-proofing rust

share|improve this question

asked 8 hours ago

rbhatrbhat

6971111 silver badges2525 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  titebond3 is waterproof and stronger than wood.
  
  – dandavis
  4 hours ago
  

  
  
  
  

add a comment
 | 

1

What screws can I use to securely attach a 2"x4" to a 4"x4" treated lumber? The solution would need to be rust-proof.

I recently used a structure similar to the image below for a small fence, but some of the screws are completely full of rust, due to treated wood humidity and the environment. I have to change that.

I was thinking of screws but any other solution is appreciated.

wood screws rust-proofing rust

share|improve this question

asked 8 hours ago

rbhatrbhat

6971111 silver badges2525 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  titebond3 is waterproof and stronger than wood.
  
  – dandavis
  4 hours ago
  

  
  
  
  

add a comment
 | 

What screws can I use to securely attach a 2"x4" to a 4"x4" treated lumber? The solution would need to be rust-proof.

I recently used a structure similar to the image below for a small fence, but some of the screws are completely full of rust, due to treated wood humidity and the environment. I have to change that.

I was thinking of screws but any other solution is appreciated.

wood screws rust-proofing rust

share|improve this question

asked 8 hours ago

rbhatrbhat

6971111 silver badges2525 bronze badges

share|improve this question

asked 8 hours ago

rbhatrbhat

6971111 silver badges2525 bronze badges

share|improve this question

asked 8 hours ago

rbhatrbhat

6971111 silver badges2525 bronze badges

asked 8 hours ago

rbhatrbhat

6971111 silver badges2525 bronze badges

asked 8 hours ago

rbhatrbhat

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3 Answers
3

active

oldest

votes

5

People use the wrong screws outside quite a lot, but thankfully there are good alternatives. Outdoor decking and fencing are commonly assembled with coated screws advertised for such. They typically come in tan or green depending on the application and can hold up for a long time without rust or staining the wood.

Stainless steel screws are another option for even more rust prevention, but they will be quite a bit more expensive. This is pretty over the top unless you're building a boat dock or similar.

For larger fasteners, hot-dipped galvanized lag bolts are good. Galvanized screws might exist, but I'm not familiar with them. Certainly you can get galvanized nails, but I think that the coated deck screws must have filled the need that galvanized screws would have because I never see them.

share|improve this answer

answered 8 hours ago

JPhi1618JPhi1618

14.2k22 gold badges2727 silver badges5050 bronze badges

add a comment
 | 

3

Stainless steel deck screws will not rust. I've used them many times on all types of lumber with great results.

But screwing into end grain never works well, put a piece of 2x4 into each corner and screw into the sides of it. The joint will be much stronger.

share|improve this answer

answered 8 hours ago

JACKJACK

4,56322 silver badges1313 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What do you mean? Something like this? i.stack.imgur.com/Qy69T.png
  
  – rbhat
  7 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  On the inside corners
  
  – JACK
  7 hours ago
  

  
  
  
  

add a comment
 | 

0

In addition to the previous two answers, I recommend against galvanized hardware in pressure treated wood unless the packaging specifically indicates that they are suitable for that use. Afaik only hot dipped galvanized is suitable for use with PT, nails are often electrogalvanized.

share|improve this answer

answered 25 mins ago

NateNate

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5

People use the wrong screws outside quite a lot, but thankfully there are good alternatives. Outdoor decking and fencing are commonly assembled with coated screws advertised for such. They typically come in tan or green depending on the application and can hold up for a long time without rust or staining the wood.

Stainless steel screws are another option for even more rust prevention, but they will be quite a bit more expensive. This is pretty over the top unless you're building a boat dock or similar.

For larger fasteners, hot-dipped galvanized lag bolts are good. Galvanized screws might exist, but I'm not familiar with them. Certainly you can get galvanized nails, but I think that the coated deck screws must have filled the need that galvanized screws would have because I never see them.

share|improve this answer

answered 8 hours ago

JPhi1618JPhi1618

14.2k22 gold badges2727 silver badges5050 bronze badges

add a comment
 | 

5

People use the wrong screws outside quite a lot, but thankfully there are good alternatives. Outdoor decking and fencing are commonly assembled with coated screws advertised for such. They typically come in tan or green depending on the application and can hold up for a long time without rust or staining the wood.

Stainless steel screws are another option for even more rust prevention, but they will be quite a bit more expensive. This is pretty over the top unless you're building a boat dock or similar.

For larger fasteners, hot-dipped galvanized lag bolts are good. Galvanized screws might exist, but I'm not familiar with them. Certainly you can get galvanized nails, but I think that the coated deck screws must have filled the need that galvanized screws would have because I never see them.

share|improve this answer

answered 8 hours ago

JPhi1618JPhi1618

14.2k22 gold badges2727 silver badges5050 bronze badges

add a comment
 | 

People use the wrong screws outside quite a lot, but thankfully there are good alternatives. Outdoor decking and fencing are commonly assembled with coated screws advertised for such. They typically come in tan or green depending on the application and can hold up for a long time without rust or staining the wood.

Stainless steel screws are another option for even more rust prevention, but they will be quite a bit more expensive. This is pretty over the top unless you're building a boat dock or similar.

For larger fasteners, hot-dipped galvanized lag bolts are good. Galvanized screws might exist, but I'm not familiar with them. Certainly you can get galvanized nails, but I think that the coated deck screws must have filled the need that galvanized screws would have because I never see them.

share|improve this answer

answered 8 hours ago

JPhi1618JPhi1618

14.2k22 gold badges2727 silver badges5050 bronze badges

share|improve this answer

answered 8 hours ago

JPhi1618JPhi1618

14.2k22 gold badges2727 silver badges5050 bronze badges

answered 8 hours ago

JPhi1618JPhi1618

14.2k22 gold badges2727 silver badges5050 bronze badges

answered 8 hours ago

JPhi1618JPhi1618

14.2k22 gold badges2727 silver badges5050 bronze badges

3

Stainless steel deck screws will not rust. I've used them many times on all types of lumber with great results.

But screwing into end grain never works well, put a piece of 2x4 into each corner and screw into the sides of it. The joint will be much stronger.

share|improve this answer

answered 8 hours ago

JACKJACK

4,56322 silver badges1313 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What do you mean? Something like this? i.stack.imgur.com/Qy69T.png
  
  – rbhat
  7 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  On the inside corners
  
  – JACK
  7 hours ago
  

  
  
  
  

add a comment
 | 

3

Stainless steel deck screws will not rust. I've used them many times on all types of lumber with great results.

But screwing into end grain never works well, put a piece of 2x4 into each corner and screw into the sides of it. The joint will be much stronger.

share|improve this answer

answered 8 hours ago

JACKJACK

4,56322 silver badges1313 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What do you mean? Something like this? i.stack.imgur.com/Qy69T.png
  
  – rbhat
  7 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  On the inside corners
  
  – JACK
  7 hours ago
  

  
  
  
  

add a comment
 | 

Stainless steel deck screws will not rust. I've used them many times on all types of lumber with great results.

But screwing into end grain never works well, put a piece of 2x4 into each corner and screw into the sides of it. The joint will be much stronger.

share|improve this answer

answered 8 hours ago

JACKJACK

4,56322 silver badges1313 bronze badges

share|improve this answer

answered 8 hours ago

JACKJACK

4,56322 silver badges1313 bronze badges

answered 8 hours ago

JACKJACK

4,56322 silver badges1313 bronze badges

answered 8 hours ago

JACKJACK

4,56322 silver badges1313 bronze badges

0

In addition to the previous two answers, I recommend against galvanized hardware in pressure treated wood unless the packaging specifically indicates that they are suitable for that use. Afaik only hot dipped galvanized is suitable for use with PT, nails are often electrogalvanized.

share|improve this answer

answered 25 mins ago

NateNate

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New contributor

Nate is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment
 | 

0

In addition to the previous two answers, I recommend against galvanized hardware in pressure treated wood unless the packaging specifically indicates that they are suitable for that use. Afaik only hot dipped galvanized is suitable for use with PT, nails are often electrogalvanized.

share|improve this answer

answered 25 mins ago

NateNate

13155 bronze badges

New contributor

Nate is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment
 | 

In addition to the previous two answers, I recommend against galvanized hardware in pressure treated wood unless the packaging specifically indicates that they are suitable for that use. Afaik only hot dipped galvanized is suitable for use with PT, nails are often electrogalvanized.

share|improve this answer

answered 25 mins ago

NateNate

13155 bronze badges

New contributor

Nate is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this answer

answered 25 mins ago

NateNate

13155 bronze badges

New contributor

Nate is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

answered 25 mins ago

NateNate

13155 bronze badges

New contributor

Nate is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

answered 25 mins ago

NateNate

13155 bronze badges