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4200 vs 5200 on Screws

Old 07-27-2004, 10:21 AM
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Default 4200 vs 5200 on Screws

When installing electronics, many drill holes, fill with 4200 or 5200, and then put the screws in. Is there any advantage to using 5200 over 4200? Both give a waterproof seal. 5200 is permanent, which may be an advantage or disadvantage depending on your application and perspective. If there is any possibility that you would want to move the installation in the future, it would seem 5200 would be a disadvange if you can't get the screws out.

What do you think - 4200 or 5200 for bedding screws?
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Old 07-27-2004, 10:32 AM
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Default RE: 4200 vs 5200 on Screws

I like to use 4200 for anything that's not truely permanent. I recently rebuilt an old 13' whaler and used 4200 on everything except for a new drain tube that was going to be underwater all the time and a thru hull I installed for a pump. I used 5200 on those. No problems to date with any of the 4200 secure screws coming loose.
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Old 07-27-2004, 11:11 AM
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Default RE: 4200 vs 5200 on Screws

You answered your own question. There are advantages and disadvantages for both. I use both depending on what I'm doing....
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Old 07-27-2004, 11:15 AM
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Default RE: 4200 vs 5200 on Screws

How tough is it to remove something that has been hit with the 4200?
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Old 07-27-2004, 11:18 AM
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Default RE: 4200 vs 5200 on Screws

Both 4200 and 5200 actually can be removed very easily beleive it or not. Acetone melts it away in 30 seconds.


for that reason, I don't ever say "5200 is permanent and 4200 is not". I say "5200 is HARD, and 4200 is soft".
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Old 07-27-2004, 02:21 PM
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Default RE: 4200 vs 5200 on Screws

If it's below the water line, I only use 5200. On screws above the water line, I use whatever (4200 or 5200) I left in the caulking gun from the last time....
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Old 07-27-2004, 05:21 PM
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Default RE: 4200 vs 5200 on Screws

I've gotta admit, I'm usually not particularly discriminate either. I might use 5200 one time, 4200 another time, and fast-set whatever if that was what was laying around. I used to use a lot of West Marine's mulit-caulk for stuff that didn't need to be glued down. Anyway its not problem getting screws out just because they've been hit with 5200. The stuff will break away from a screw OK, but it will usually stick to the glass pretty tenaciously.

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