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Discussion Starter · #1 ·
What size did you find fit majority of the holes in the promaster? I know there are a few different sizes. I'm specifically looking for the holes around the rectangle opening above sliding door.

I'm not interested in rivnuts. I have tried them and IMO they don't compare to plusnuts. Strictly looking for what plusnut size will fit in a most of the holes without having to ream the holes?

Thanks in advance!
 

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I realize that this is not an answer to the question you asked but I thought I would share this very useful link on how to install plus nuts without the special tool.

I ordered a partition that came with plus nuts but no tool to install them

I called all around and I could not find a plus nut tool but I found this link that shows how to install them without any special tools and the method described at the link worked.

http://faroutride.com/plusnut/
 

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Discussion Starter · #3 ·
I realize that this is not an answer to the question you asked but I thought I would share this very useful link on how to install plus nuts without the special tool.

I ordered a partition that came with plus nuts but no tool to install them

I called all around and I could not find a plus nut tool but I found this link that shows how to install them without any special tools and the method described at the link worked.

http://faroutride.com/plusnut/
Thanks that’s the plan! The tool seems way over priced and cheaply made.
 

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Thanks that’s the plan! The tool seems way over priced and cheaply made.
After having to install about 10 Plus Nuts, I have a couple of suggestions:

The common tool DIY method at the link I provided works but it is not easy and not fool proof. I used it for my first five but I was glad that the shelves I bought came with a plus nut tool so that I did not have to continue to use the DIY method.

If you are doing the DIY method at the link I provided, I found it works much easier with this type of K-Nut (https://www.lowes.com/pd/Hillman-2-Count-1-4-in-20-Black-Phosphate-Standard-SAE-Hex-Nuts/3012471) rather than the type of K-nut the web site suggests.
 

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Discussion Starter · #5 ·
After having to install about 10 Plus Nuts, I have a couple of suggestions:

The common tool DIY method at the link I provided works but it is not easy and not fool proof. I used it for my first five but I was glad that the shelves I bought came with a plus nut tool so that I did not have to continue to use the DIY method.

If you are doing the DIY method at the link I provided, I found it works much easier with this type of K-Nut (https://www.lowes.com/pd/Hillman-2-Count-1-4-in-20-Black-Phosphate-Standard-SAE-Hex-Nuts/3012471) rather than the type of K-nut the web site suggests.
ok, did you use this tool? It appears to have really bad reviews and seems overpriced but it worked fine for you? What size plus nuts did you use? I'm looking to mount some panels on the top of the sliding doors and then cabinets in the wall/ceiling corners.

[ame]https://www.amazon.com/C-845-Cruss-Nut-Tool-4-20/dp/B00Q5KM7O6[/ame]
 

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Don't use that Jaycee Sales tool. Very fragile.

Hanson Rivet sells a similar tool, a few bucks cheaper, much better design-


Hanson Rivet's website is a little obtuse, but allows you to order smaller quantities (they call them "multi-grip inserts" instead of "plus nuts" or "cross nuts") -

http://www.erivet.com/storefront.cfm?ID=ERIVET_39595268_57485460

or you can just call them.
 

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Discussion Starter · #7 ·

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I've been pretty happy with using nutserts so far. I bought this tool, a bit pricey but comes with everything you need for metric and SAE including an assortment of nutserts.

[ame]https://www.amazon.com/gp/product/B003TODXQW/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1[/ame]
 

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Discussion Starter · #10 ·
I've been pretty happy with using nutserts so far. I bought this tool, a bit pricey but comes with everything you need for metric and SAE including an assortment of nutserts.

[ame]https://www.amazon.com/gp/product/B003TODXQW/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1[/ame]
Those are rivnuts and I have that exact tool, not impressed at all. I’ve had 4 spin and then when I tightened the tool a little bit and snapped off the attachment.
 

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Or just do this.





The black bar is a piece of steel that was left over from a garage door opener install... any piece of metal with a hole in it would work. Add a bolt, a few washers, a touch of oil between the washers...... works perfectly and gets into tight places.
 

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Those are rivnuts and I have that exact tool, not impressed at all. I’ve had 4 spin and then when I tightened the tool a little bit and snapped off the attachment.
Hex rivnuts/nutserts don't spin and there are plenty of existing hex holes in the Promaster. Since you already have the Astro tool I don't think you have much to lose by buying some hex rivnuts depending on which mandrel you broke.

Alternatively either return or ask Astro for a replacement mandrel and sell your Astro on the forum. Then decide which size plusnuts you want to use and use the proceeds to buy a single-size $50.00 "multigrip insert" tool and plusnuts from Hansen Rivet.
 

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If the hole is sized correctly for the rivnut I don't see how they could spin but I guess it's possible. Never experienced that issue.
 

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+1 on rivnuts. I'm half way through getting all mine set. I did break a 10-24 bit but that was user error (had to break it to learn how to do it right!)

To be fair i haven't added the non hex type yet so i can't say whether they spin or not but the hex ones are SUPER solid. Gave me a lot of confidence for putting up the overhead storage.
 

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Discussion Starter · #15 · (Edited)
Hex ones installed fine, round ones suck. Plusnuts by their design are a lot stronger with a larger range. If you measure the holes in the promaster they are a lot different. The holes I need plusnuts for are round. For anyone else interested the small round holes around the rectangular cut out holes in the top of the slider are 0.317 diameter and 0.035 thick.
 

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Hex ones installed fine, round ones suck.

For anyone else interested the small round holes around the rectangular cut out holes in the top of the slider are 0.317 diameter and 0.035 thick.
Harbor Freight has a tool with about 10 of 4 different size round rivnuts, for under $20. I used 1/4-20 rivnuts around the upper door opening in the factory holes. I think I may have drilled 'em out a bit. No slippage with the HF tool or my slim space tool above...so far I must have about 80-100 rivnuts in the van... no slips (so far)
 
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