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Old 02-17-2014, 11:02 PM   #1
bigchopperguy
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auxilary tank bolts

Hi all, I need to replace the thru bolts that mount the auxiliary tanks through the bed. They are 7/16 x 13 inch carriage bolts with a special nut on the bottom. Anyone familiar with this setup? any advice for replacement bolts much appreciated. john
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Old 02-18-2014, 08:56 AM   #2
Daddy Brim
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Re: auxilary tank bolts

I would think you should be able to get them at your local hardware store.
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Old 02-18-2014, 11:07 AM   #3
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Re: auxilary tank bolts

Good luck sourcing the original types. Maybe try taking the bottom "nut" to a machine shop and have then turn a few out. The carriage bolts might be easier to find but will take some sourcing. Fastenal will special order them but they are proud of them for the size. When I refurbed my tanks, I broke one of the long carriage bolts and just used some all thread and Nyloc nut with a body washer for the top. It sucks having a big nut sticking up in the bed but it works till I can find another for a reasonable price. I was able to save the lower nut with a tap though. I spent a week or so looking for replacements but no luck. If you do find some, let me know and I'll grab a set as well. Check out some RV and 18 wheeler shops, those tanks are not factory and originally came from a RV accessory manufacture.
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Old 02-18-2014, 02:02 PM   #4
mrein3
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Re: auxilary tank bolts

Quote:
Originally Posted by bigchopperguy View Post
Hi all, I need to replace the thru bolts that mount the auxiliary tanks through the bed. They are 7/16 x 13 inch carriage bolts with a special nut on the bottom. Anyone familiar with this setup? any advice for replacement bolts much appreciated. john
I made my own. Two carriage bolts welded to all thread. I used regular nuts on the bottom after a fender washer and lock washer. They have been working good for over 11 years.
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Old 02-22-2014, 02:55 AM   #5
bigchopperguy
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Re: auxilary tank bolts

Thanks for the replies. I was able to save the nuts so I will be making my own bolts from 7/16 u-bolt stock from the spring shop. I made plates for the top out of 1/4 x 1-1/2 flat bar. thanks again
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