2019 Honda CRV with a 3rd conversion ( help find specialty bolt needed to finalize the project)

[Betik]

Right before the pandemic hit last year I bought a left over 2019 CRV. During the pandemic I have put mods on this vehicle as if it was a boat. That being said, I am kind of stuck on a final mod though. I have added seat belts and a Jeep seat on the trunk and they feel solid. However, I want the seat to be bolted down to the angle iron I have mounted. The problem is that traditional bolts require access both from the top and the bottom in order to tight it. However, given the trunk tray is in between I need some sort of bolt that can be tightened from the top. For example, I regular bolt with a hexagone insert would work. I have googled it multiple time, but I think I am using the wrong terminology to search for it.
Does anyone know how to search for those specialty bolts? OR have any recommendations on securing the seat?


I hope someone can help find what I need otherwise I will have to sale the car and buy a minivan as the kids demand a 3rd row even it is just the 2 of them.

 

[2kwik4u]

Drill and Tap the angle iron for the bolt you want to use.

I'll use a 3/8" bolt as an example. You will have to choose the appropriate tap and drill bit to go with whatever size bolt you want to use.

Buy this bolt:

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

Then buy this drill bit:

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

That drill bit makes the hole for this tap:

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

You will need this tap handle (unless you already have one):

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

Follow this procedure (assuming you've never done this before).

• Mark where you want the holes.
• Drill hole with above drill bit and cordless drill
  • Use lubrication and go slow
  • Speed makes heat
  • heat kills drill bits
• Assemble tap into handle
• Tap (thread) the hole you just drilled.
• Place items where you want them and bolt into place.
• Drink a beer and admire your handy work

Let me know if you have questions.

Here's a guy on Youtube that taps a piece of angle iron, just like what you're looking to do.

Adam Savage has a great video on it as well. It's long at 45min though. He's a pleasure to listen to however, so it's worth it if you have the time.

 

[zipper]

I think you are looking for blind nuts. gugl it. A lot of options out there.

Threaded Insert Jack Nut RIV Nut Blind Nut 25 Pack #1/4-20x0.71" Insert Nut Blind Nuts Threaded Rivets Nut Inserts Steel Threaded Rivet Blind Fastener Threaded Insert for Metal Super-Deals-Shop: Amazon.com: Industrial & Scientific

Threaded Insert Jack Nut RIV Nut Blind Nut 25 Pack #1/4-20x0.71" Insert Nut Blind Nuts Threaded Rivets Nut Inserts Steel Threaded Rivet Blind Fastener Threaded Insert for Metal Super-Deals-Shop: Amazon.com: Industrial & Scientific

www.amazon.com

 

[djetok]

Right before the pandemic hit last year I bought a left over 2019 CRV. During the pandemic I have put mods on this vehicle as if it was a boat. That being said, I am kind of stuck on a final mod though. I have added seat belts and a Jeep seat on the trunk and they feel solid. However, I want the seat to be bolted down to the angle iron I have mounted. The problem is that traditional bolts require access both from the top and the bottom in order to tight it. However, given the trunk tray is in between I need some sort of bolt that can be tightened from the top. For example, I regular bolt with a hexagone insert would work. I have googled it multiple time, but I think I am using the wrong terminology to search for it.
Does anyone know how to search for those specialty bolts? OR have any recommendations on securing the seat?


I hope someone can help find what I need otherwise I will have to sale the car and buy a minivan as the kids demand a 3rd row even it is just the 2 of them.

Fastenal

 

[Can0n11]

We use a PMA version of these in Aviation:

MS21059 Self-Locking Nut Plate, Floating | Pegasus Auto Racing Supplies

MS21059 Floating Nutplates let you install a captive self-locking all-steel locking nut behind a panel. The floating nut allows for some misalignment in assembly.

www.pegasusautoracing.com

 

[Betik]

Drill and Tap the angle iron for the bolt you want to use.

I'll use a 3/8" bolt as an example. You will have to choose the appropriate tap and drill bit to go with whatever size bolt you want to use.

Buy this bolt:

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

Then buy this drill bit:

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

That drill bit makes the hole for this tap:

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

You will need this tap handle (unless you already have one):

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

Follow this procedure (assuming you've never done this before).

• Mark where you want the holes.
• Drill hole with above drill bit and cordless drill
  • Use lubrication and go slow
  • Speed makes heat
  • heat kills drill bits
• Assemble tap into handle
• Tap (thread) the hole you just drilled.
• Place items where you want them and bolt into place.
• Drink a beer and admire your handy work

thank you, I remember seeing my dad doing this when I was little kid. I might give it a shot

 

[Betik]

I think you are looking for blind nuts. gugl it. A lot of options out there.

Do you think this will have enough grip to apply high torque while bolting down ?

 

[zipper]

Do you think this will have enough grip to apply high torque while bolting down ?

It is hard to see in your pictures where you need the threads. To me it looks like you need a clearance hole in the angle iron and threads in the trunk sheetmetal. If you need threads in the angle iron then cutting threads with a tap as @2kwik4u is your best option as long as it is thick enough to get 4-5 complete threads cut into it. If it is the trunk sheetmetal you are trying to grab, tap into, that will not be thick enough to tap unless there is a backing plate, like bumper reinforcement in that spot. Another picture or even a hand sketch might clarify. I assume you will be using 3/8" or 1/2" hardware which will need some fairly thick material to tap into. The pictures of the "speed chart" show the hardware info. for tapping both a UNC and UNF threads. To cut enough threads into the sheetmetal for that size hardware, you will need at least 1/4" of material thickness. If you can tap, I would do that as long as you have access for the sliding t handle to start straight. While hand tapping, cut some thread by turning the t handle, maybe a half revolution and then turn the handle backwards until you hear, feel the thread curl snap, then another half turn and then backwards again until you feel another snap. Repeat until you are thru.

A blind nut will lock itself to the sheetmetal as you tighten the bolt. You can use locktite if you are worried about the bolt backing out. The metal around the hole would have to stretch, deform for it to fail by pulling thru the hole or tearing the metal.

Another picture or drawing of what you are doing will clarify for us.

Here is some thread info. on tap drill size needed to cut threads for 3/8 and 1/2" bolts.





If you are just bolting the seat to the angle iron then tap it as long as you have enough clearance between the angle iron and the trunk to turn the bolts tight. Nevermind the sketch or most of the above, I see what you are doing now. How thick is the angle iron? I thought you were trying to bolt the angle iron to the sheetmetal in the trunk.

 

[adrianp89]

This is cool, any log of your mods?

 

[Betik]

@zipper we are in Florida but I will take the measurements and put a drawing.

 

[Betik]

This is cool, any log of your mods?

I have done a write up but I could once it is all done. Do you have a CRV you think about adding a 3rd row ? It is very cramped, but my kids think it is fun, so I kind of have to ….

 

[adrianp89]

I have done a write up but I could once it is all done. Do you have a CRV you think about adding a 3rd row ? It is very cramped, but my kids think it is fun, so I kind of have to ….

No, just enjoying seeing cars/boats/whatever being modded.

 

[Betik]

I did go with @2kwik4u option and you can almost see the 3 holes that are threaded. On the second photo you can see how it looks when covered. I only have to find an easy way to use the seatbelt buckles which should not be very difficult.

as a side note the spare tire is still accessible with an allen range to take off the 3 bolts. Now that will add an extra 20 minutes if we have to use the spare tire, but we will see

I will post some pictures once it is final …..