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Old 12-30-2013, 02:47 PM   #1
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rivet length...?

I am starting to gather what I need to do some metal work on the F.C. but I am not sure if this is the correct rivet length I need. I am putting on new lower panel skin.

What I am looking at is "Modified Brazer Head Rivets AN456A - 5/32"D 3/8"L"

Now then I will be riveting together these three: side skin (.040)+belly skin (.030)+ new C channel (.070)= .140. What is the correct clinch allowance and are 3/8"length (.375) rivets to long? If so what would be the recommended length?
Thanks, Barry
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Old 12-30-2013, 03:29 PM   #2
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Originally Posted by goshawks00 View Post
I am starting to gather what I need to do some metal work on the F.C. but I am not sure if this is the correct rivet length I need. I am putting on new lower panel skin.

What I am looking at is "Modified Brazer Head Rivets AN456A - 5/32"D 3/8"L"

Now then I will be riveting together these three: side skin (.040)+belly skin (.030)+ new C channel (.070)= .140. What is the correct clinch allowance and are 3/8"length (.375) rivets to long? If so what would be the recommended length?
Thanks, Barry
The length of a buck rivet really doesn't matter.

What does matter has it been properly bucked, with and adequate overlap on the interior, or back side.

In your case, 3/8 or 1/2 inch is fine.

Seal each one with Vulkem and add Vulkem between the seams before you do any riveting.

Andy
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Old 12-30-2013, 03:42 PM   #3
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I believe the correct recipe is the thickness (.140) plus 1.5 D (rivet diameter). The length should be .140+.234 = .375, or a number 6 (6/16ths). You are "spot-on".
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Old 12-31-2013, 09:17 AM   #4
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The above number is correct, that would be a -6 in rivet speak. Rivet length is measured in 1/16th increments, 3/8" = 6/16" so -6. The proper size of the bucktail after bucked is 1.5 D in diameter and .5 D in height
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