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Mar 6, 2021 at 5:43 vote accept rmaddy
Feb 27, 2021 at 18:52 comment added fred_dot_u Yeah, that sixteenths of an inch wall isn't going to take threads well enough. I think the heated glue idea has merit, as well as more pressure on the insert when actuating the pull.
Feb 27, 2021 at 17:25 comment added Ed Beal @rmaddy thanks for the link. I have a 1/4-28 tap actually 3 for gunsmithing (taper,straight,bottoming) and I would go with the rivnuts because of the wind load on the trailer would be in all likelihood be hurricane force, a 30 mph head wind while traveling 55 would not be unusual. My partner had a roof rack bringing a load of 4” drainage pipe tied to the rack for a job the rack pulled loose and that was factory. They did repair it as it was a lease but I would want the rivnuts or to have Tig welded inserts put in if possible with the adhesive that would contaminate the tig process.
Feb 27, 2021 at 16:09 comment added rmaddy @fred_dot_u Thanks but in the process of trying out the rivnut I realized the steel tubing wall is only 1/16", not 1/8", so a threaded hole won't work at all.
Feb 27, 2021 at 16:05 comment added rmaddy @EdBeal They are most likely referring to a related question (engineering.stackexchange.com/questions/40430/…) I posted earlier.
Feb 27, 2021 at 14:48 comment added Ed Beal @fred_dot_u , what’s the comment about 1/4-28 tap? Rivnuts are threaded inserts used where the metal is thin or in some cases two soft. The only place I use 1/4-28 is on ar15 pistol grip screws, just wondering? When I install rivnuts I want a very tight fit, maintains downward pressure on the skin I have tied 2 layers of metal to the aluminum frame on my van for mounting ladder racks in the past.
Feb 27, 2021 at 10:48 comment added fred_dot_u This problem makes that quarter-twenty-eight tap look a bit more attractive.
Feb 27, 2021 at 6:40 history edited rmaddy CC BY-SA 4.0
Added some more details.
Feb 27, 2021 at 6:38 answer added Michael Karas timeline score: 2
Feb 27, 2021 at 6:13 answer added Solar Mike timeline score: 1
Feb 27, 2021 at 5:36 comment added rmaddy The hole seems to be the correct size. The rivnut needed to be pushed into the hole ever so slightly.
Feb 27, 2021 at 4:40 comment added brhans Are you sure you're drilling the right size hole for the rivnut? I can imagine what you describe happening if the hole is a little too large.
Feb 27, 2021 at 3:05 history asked rmaddy CC BY-SA 4.0