Bod Posted June 1, 2019 Report Share Posted June 1, 2019 https://www.ebay.co.uk/itm/M8-Heavy-Duty-High-Tensile-10-9-Rivnut-Rivet-Nut-Nutsert-Tool-Kit/123769686392?hash=item1cd13f8978:g:dOMAAOSwEIFZx8d8&frcectupt=true I've had success with this, working with blind M8 Rivnuts. Bod Link to comment Share on other sites More sharing options...
Ian F B Posted June 2, 2019 Report Share Posted June 2, 2019 15 hours ago, Bod said: https://www.ebay.co.uk/itm/M8-Heavy-Duty-High-Tensile-10-9-Rivnut-Rivet-Nut-Nutsert-Tool-Kit/123769686392?hash=item1cd13f8978:g:dOMAAOSwEIFZx8d8&frcectupt=true I've had success with this, working with blind M8 Rivnuts. Bod When the excrement hits the revolving blades rivnuts are absolutely ace!!!??? Link to comment Share on other sites More sharing options...
Captain Fizz Posted June 2, 2019 Report Share Posted June 2, 2019 Rivet nuts are an excellent solution and are available in differing thread sizes and for differing sheet/plate thicknesses. Link to comment Share on other sites More sharing options...
ditchcrawler Posted November 5, 2019 Report Share Posted November 5, 2019 On 01/06/2019 at 15:45, nicknorman said: I call them rivnuts. Cheap to get a kit from eBay. Eg https://www.ebay.co.uk/itm/Threaded-Nut-Riveter-Rivet-Gun-Rivnut-Insert-Tool-86-Rivets-M3-M8-Nutsert-Kit/283243963102?epid=27023360074&hash=item41f2a7e2de:g:iMoAAOSwusNbjnGQ I now need to do this, I wonder what sheet thickness these ones are for Link to comment Share on other sites More sharing options...
Jen-in-Wellies Posted November 5, 2019 Report Share Posted November 5, 2019 13 minutes ago, ditchcrawler said: I now need to do this, I wonder what sheet thickness these ones are for How thick is the metal you need to rethread? If it is too thick for rivnuts you might be better with a helicoil. What diameter thread do you need to do? Metal thickness and everything else for rivnuts. Jen Link to comment Share on other sites More sharing options...
ditchcrawler Posted November 5, 2019 Report Share Posted November 5, 2019 12 minutes ago, Jen-in-Wellies said: How thick is the metal you need to rethread? If it is too thick for rivnuts you might be better with a helicoil. What diameter thread do you need to do? Metal thickness and everything else for rivnuts. Jen Cabin side, probably 4mm for a 5mm screw. I have ordered some longer rivnuts but wonder if the crimpy tool will reach them, Only one possibly two to fit so far so may just try a nut bolt and washer to jack it out to set it. Link to comment Share on other sites More sharing options...
Jen-in-Wellies Posted November 6, 2019 Report Share Posted November 6, 2019 9 hours ago, ditchcrawler said: Cabin side, probably 4mm for a 5mm screw. I have ordered some longer rivnuts but wonder if the crimpy tool will reach them, Only one possibly two to fit so far so may just try a nut bolt and washer to jack it out to set it. 0.7mm You might be better with a helicoil. Normal (course) pitch M5 threads are 0.8mm, so enough to get plenty of threads in a 4mm cabin side. Jen Link to comment Share on other sites More sharing options...
Mike Adams Posted November 6, 2019 Report Share Posted November 6, 2019 6mm pop rivet. Drill it out next time you take the lid off. Link to comment Share on other sites More sharing options...
hawkesmith Posted November 6, 2019 Report Share Posted November 6, 2019 Rivetnuts will do the job but coat the threads with copperslip so they don't seize. If they do seize you are in a fix. Link to comment Share on other sites More sharing options...
BWM Posted November 6, 2019 Report Share Posted November 6, 2019 Make a new gasket out of neoprene omitting the stripped hole, drill and tap new holes either side of the duff one. Alternatively you could enlarge the hole in the lid so that is large enough to accommodate the bolt head, and put a nut and bolt in the tank to seal the redundant hole. Link to comment Share on other sites More sharing options...
jacko264 Posted November 11, 2019 Report Share Posted November 11, 2019 Just a little tip before putting the rivnut in the hole put some threadlock around it and it will help stop it spinning at a later time also put copper slip on the bolt jacko Link to comment Share on other sites More sharing options...
ditchcrawler Posted November 11, 2019 Report Share Posted November 11, 2019 6 minutes ago, jacko264 said: Just a little tip before putting the rivnut in the hole put some threadlock around it and it will help stop it spinning at a later time also put copper slip on the bolt jacko The plan is to try a Helicoil first and if that fails a Rivnut, hoping that the Rivnut needs a larger hole than the coil Link to comment Share on other sites More sharing options...
Slim Posted November 12, 2019 Author Report Share Posted November 12, 2019 Due to circumstances I've yet toget around to using a Rivnut on my water tank. However i had atrial run at home Wwithout using a setting tool. I worked out a way for my job. You need to keep the flange hard up against the work piece whilst setting it. It's a glorified pop rivet Still very gratful to know about them Link to comment Share on other sites More sharing options...
ditchcrawler Posted November 12, 2019 Report Share Posted November 12, 2019 11 minutes ago, Slim said: Due to circumstances I've yet toget around to using a Rivnut on my water tank. However i had atrial run at home Wwithout using a setting tool. I worked out a way for my job. You need to keep the flange hard up against the work piece whilst setting it. It's a glorified pop rivet Still very gratful to know about them Did you just press something heavy on the bolt head, also did you but longer rivnuts of is your deck only 3mm? 1 Link to comment Share on other sites More sharing options...
Slim Posted November 12, 2019 Author Report Share Posted November 12, 2019 1 hour ago, ditchcrawler said: Did you just press something heavy on the bolt head, also did you but longer rivnuts of is your deck only 3mm? The Rivnut was 8mm long s/s. The way I did it ( my job was on the edge of a plate) was to take a strip of 4 mm steel in which I drilled a clearance hole for the intended bolt but less than the flange diameter. The flange diameter was just over 11mm I then inserted an 8 mm bolt through clearance hole into the Rivnut thread. Once positioned I clamped the steel strip with a couple of pairs of mole grip and 'tightened' the bolt until the Rivnut was set. On the practice piece it worked Frank Link to comment Share on other sites More sharing options...
ditchcrawler Posted November 12, 2019 Report Share Posted November 12, 2019 1 minute ago, Slim said: The Rivnut was 8mm long s/s. The way I did it ( my job was on the edge of a plate) was to take a strip of 4 mm steel in which I drilled a clearance hole for the intended bolt but less than the flange diameter. The flange diameter was just over 11mm I then inserted an 8 mm bolt through clearance hole into the Rivnut thread. Once positioned I clamped the steel strip with a couple of pairs of mole grip and 'tightened' the bolt until the Rivnut was set. On the practice piece it worked Frank Ta I may have one to set on the cabin side but only 5mm bolt Link to comment Share on other sites More sharing options...
Slim Posted November 12, 2019 Author Report Share Posted November 12, 2019 3 minutes ago, ditchcrawler said: Ta I may have one to set on the cabin side but only 5mm bolt If it were me I would make up a plate along the lines of the one I made and find a way of keeping pressure on it whilst setting the rivnut. A couple of beefy mates with strong fingers ? Link to comment Share on other sites More sharing options...
ditchcrawler Posted November 12, 2019 Report Share Posted November 12, 2019 17 minutes ago, Slim said: If it were me I would make up a plate along the lines of the one I made and find a way of keeping pressure on it whilst setting the rivnut. A couple of beefy mates with strong fingers ? Sounds a good idea Link to comment Share on other sites More sharing options...
jacko264 Posted November 12, 2019 Report Share Posted November 12, 2019 We use rivnuts a lot at work and in stead of using the proper tool we just use a 8mm bolt and nut with a washer . put the nut on the bolt then the washer screw the bolt into the rivnut then with two spanners hold the bolt head and nip the nut down on the rivnut job done ? Jacko Link to comment Share on other sites More sharing options...
ditchcrawler Posted November 12, 2019 Report Share Posted November 12, 2019 3 hours ago, jacko264 said: We use rivnuts a lot at work and in stead of using the proper tool we just use a 8mm bolt and nut with a washer . put the nut on the bolt then the washer screw the bolt into the rivnut then with two spanners hold the bolt head and nip the nut down on the rivnut job done ? Jacko That was my plan Link to comment Share on other sites More sharing options...
ditchcrawler Posted December 5, 2019 Report Share Posted December 5, 2019 On 11/11/2019 at 21:20, ditchcrawler said: The plan is to try a Helicoil first and if that fails a Rivnut, hoping that the Rivnut needs a larger hole than the coil Well while we were taking on water today at Fradley and the correct side of the boat was against the towpath, I re drilled and tapped the hole in the cabin side, inserted the Heli-coil and screwed home the 5mm screw, all is well, thanks. Link to comment Share on other sites More sharing options...
pearley Posted December 5, 2019 Report Share Posted December 5, 2019 On 01/06/2019 at 21:08, Chewbacka said: Having set stainless pop rivets they take a huge amount of force to set, I think you will struggle to set those without a long handle tool, interested to see how you get on. I used to fit security deadlocks to vans. The kits all came with stainless steel poo rivets. Bloody hard by hand but fortunately Machine Mart did an air operated rivet gun. Link to comment Share on other sites More sharing options...
WotEver Posted December 5, 2019 Report Share Posted December 5, 2019 (edited) 42 minutes ago, pearley said: I used to fit security deadlocks to vans. The kits all came with stainless steel poo rivets. Bloody hard by hand but fortunately Machine Mart did an air operated rivet gun. What you need is a Lazy Tongue riveter. https://www.screwfix.com/p/lazy-tongue-riveter/10461 Edited December 5, 2019 by WotEver I carnt spel Link to comment Share on other sites More sharing options...
pearley Posted December 5, 2019 Report Share Posted December 5, 2019 (edited) 17 minutes ago, WotEver said: What you need is a Lazy Tongue riveter. https://www.screwfix.com/p/lazy-tongue-riveter/10461 Too much chance of the riveter bouncing as the mandrel snapped. Milwaukee do a rechargeable one now. Edited December 5, 2019 by pearley Link to comment Share on other sites More sharing options...
WotEver Posted December 5, 2019 Report Share Posted December 5, 2019 4 minutes ago, pearley said: Too much chance of the riveter bouncing as the mandrel snapped. Hmm, not a problem I’ve experienced but I could see it as a possibility. Link to comment Share on other sites More sharing options...
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