#### DennisFetters

##### Gold Supporter

- Joined
- Jul 18, 2005

- Messages
- 3,321

- Location
- Abu Dhabi UAE

- Aircraft
- 582 Commander Elite

- Total Flight Time
- Stopped counting years ago after 5,000

As many of you know, I'm working on a project here in China, and I'm very limited to some technical access.

I'm needing to place a large order of AN470AD hard aluminum rivets from Aircraft Spruce, and I'm trying to calculate the "Clinch Allowance", because Spruce only gives the length of the rivet, and don't provide the information to calculate this for some reason, or I can't find it.

I lost my rivet length calculator in the Corona Ca flood a few months ago, and I can't seem to find the information on-line from here. I would appreciate some help. If someone could send me the formulas would be great, so I could calculate the nearest size that would work.

I am ordering:

3/16" for a work thickness of 1"

3/16" for a work thickness of 1/2"

and:

3/32" for a work thickness of 1/16"

3/32" for a work thickness of 1/2"

3/32" for a work thickness of 9/16"

I would appreciate some help.