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08-29-2020, 12:03 PM
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#1
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Senior Member
Join Date: Sep 2016
Location: Riverside
Posts: 323
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Screw 4 inch long. What?
This screw was starting to pop through the vinyl floor in the center of the floor. This is the second time it's happened. First time I slit the vinyl floor and screwed in back in and silconed the floor. It look great until I noticed the bump again in the vinyl floor. Since I am home and not on the road I decided to open the floor again and I removed the screw (see attached photo) it's a 4 inch screw and only threaded 3 inches leaving the top inch un-threaded.
So has anyone else experienced this!
Marko
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08-29-2020, 01:16 PM
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#2
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Senior Member
Join Date: Jul 2016
Location: Mapleton
Posts: 4,379
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That's not a screw but it is a bolt. Odds are it either was used to hold someything up by hanging it from the flooring or hold the flooring down by bolting it into the frame or something metal down below.
Measure from the screw to the wall and get under there and look for where it came through. If you have not sealed up the hole gut a coat hanger or equivalent and poke it down to see if you can find where it went. You may want to get a nut and washer plus possibly some thread locking glue and replace it if something is hanging out down there.
__________________
2017 SLX 195RB
2021 Jeep Grand Cherokee Summit L 5.7L V8
Andersen WDH hitch, Renogy 100 AH Lithium &
200 Watts solar panels from Renogy
Prev. '14 Jeep Grand Cherokee Overland, gas 3.6 V6
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08-29-2020, 01:42 PM
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#3
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Senior Member
Join Date: Sep 2016
Location: Riverside
Posts: 323
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It's a self tapping screw. Look at the bottom tip threads they are on an angle. Plus the tip is shaped different then a machine bolt. It's fluted or conical shaped. So I believe it's to hang heating duct work as the bottom portion of the screw has rust or metal flake on it. The top portion of the screw looks brand new with no discoloration.
Marko
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08-29-2020, 01:45 PM
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#4
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Senior Member
Join Date: Apr 2015
Location: Michigan
Posts: 2,650
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Agree its a screw, I would replace with a much shorter full thread screw or just leave it out and patch.
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08-29-2020, 02:20 PM
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#5
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Senior Member
Join Date: Feb 2014
Posts: 431
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It holds the floor to the frame. Take it out, put lock tire on it and put it back. Just screwing it back in won’t keep it in.
__________________
Camping Progression: Tent, 2003 Clipper Classic 1255 ST - Gone, 2014 Dutchman Aerolite 282DBHS - Gone
2019 Jayco North Point 377 RLBH
Tow Rig: 2015 Ford F-450 Platinum, airbags, B&W Companion hitch for factory puck system.
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08-29-2020, 02:38 PM
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#6
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Senior Member
Join Date: Nov 2011
Location: Where ever the boss says we're going.
Posts: 16,124
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Quote:
Originally Posted by prm99v6
It holds the floor to the frame. Take it out, put lock tire on it and put it back. Just screwing it back in won’t keep it in.
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X-2
__________________
DISNEY LOVERS
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08-29-2020, 02:49 PM
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#7
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Senior Member
Join Date: Sep 2016
Location: Riverside
Posts: 323
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Sounds like a good plan. Thinking about it adding epoxy to the top part of the screw / bolt too (non-threaded area) so maybe the plywood floor will keep it in tight as well.
What do ya think? Over kill?
Marko
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08-29-2020, 03:01 PM
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#8
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Senior Member
Join Date: Mar 2018
Location: Boiling Springs
Posts: 533
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It only needs threads long enough to thread into the Frame or bracket. The floor will have a clearance hole for the screw. You don’t need threads the full length. Great idea on the post getting underneath and putting a nut on it if you can access it. I would not use epoxy on the floor surface in case you need to work on this screw again.
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RipinSC
2019 Eagle FW 321RSTS
2015 GMC 2500 HD 6.0 Gas
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08-30-2020, 04:50 AM
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#9
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Senior Member
Join Date: Sep 2016
Location: Riverside
Posts: 323
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The original four inch Pan Head screw is a self- tapper or self-drilling type of screw. So if I reuse the original screw a bolt won't be able to fasten on to the screw as the screw in meant to go through metal and not supposed to come out again. So what I found available at my local hardware store was a four inch Machine Screw thats fully threaded. Since the original sell-drilling screw has made the opening I thought of using the new four inch Machine Screw (same size) with Blue Loc-Tight and skip using the Epoxy. What are your thoughts?
Thanks for all the support and suggestions!
Marko
Marko
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08-30-2020, 04:59 AM
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#10
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Senior Member
Join Date: Sep 2016
Location: Riverside
Posts: 323
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By the way. I inserted a thicker coat hanger into the screw hole about the same dimension as the screw that I pull out and the hanger went down eight inches before it stop. Under side is completely enclosed (underbelly).
Marko
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08-30-2020, 08:47 AM
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#11
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Senior Member
Join Date: Jul 2016
Location: Mapleton
Posts: 4,379
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If you have some Etearnabond or equivalent then you should consider opening an access hole in the bottom. Find where the wire is coming through and then consider using washers and lock nuts on the end of the bolt to hold up whatever it is going through and was originally designed to support. If it was not something important than maybe just fill the hole and call it a day.
Odds are, as Jayco uses the absolute minimum to hold anything together, it could mean some thing will fall out of the bottom some day.
__________________
2017 SLX 195RB
2021 Jeep Grand Cherokee Summit L 5.7L V8
Andersen WDH hitch, Renogy 100 AH Lithium &
200 Watts solar panels from Renogy
Prev. '14 Jeep Grand Cherokee Overland, gas 3.6 V6
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08-30-2020, 09:49 AM
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#12
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Senior Member
Join Date: Aug 2013
Location: Bellingham,Wa.
Posts: 6,680
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You won’t be able to put a nut on that self taping screw because the threads are not the same ( US, metric, pitch). It’s a sheet metal screw not a bolt.
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2010 Jayco Hybrid EXP21M
2013 Toureg TDI
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08-30-2020, 06:45 PM
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#13
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Senior Member
Join Date: Sep 2016
Location: Riverside
Posts: 323
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Thanks for all the great suggestions. I went with a new four inch threaded Pan Head Machine Screw with Blue Loc-Tight on the bottom one inch. Screwed it back in, clear siliconed the slits in the vinyl floor and added some weight to apply pressure to the vinyl / silicone adhesive cure then had a beer. Done. I hope.
Thanks again for the help!
Marko
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08-30-2020, 06:50 PM
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#14
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Senior Member
Join Date: Oct 2017
Location: Oregon Coast
Posts: 3,099
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Had one of those screws come floating down the stinky slinky while dumping one day
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Brian & Jeannie
2018.5 Seneca 37RB with to many mods to list
2015 Jeep JKU Rubicon
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09-06-2020, 11:07 AM
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#15
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Member
Join Date: Jul 2020
Location: Toad Suck
Posts: 83
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same problem on screw protruding from floor
We had the same problem in two spots on our new 2020 Jayco.
Didn't want to slit floor so i took a hammer and drove it back in. Problem was tip punched tiny hole now in flooring.
Next time I'll get a bigger hammer...😲
Quote:
Originally Posted by Marko
This screw was starting to pop through the vinyl floor in the center of the floor. This is the second time it's happened. First time I slit the vinyl floor and screwed in back in and silconed the floor. It look great until I noticed the bump again in the vinyl floor. Since I am home and not on the road I decided to open the floor again and I removed the screw (see attached photo) it's a 4 inch screw and only threaded 3 inches leaving the top inch un-threaded.
So has anyone else experienced this!
Marko Attachment 62947
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