bookend69 Posted January 16, 2017 Report Share Posted January 16, 2017 Hi All I'm about to fit spot lights on the front of my 250, but am unable to find anything which might stop them from being stolen. When I had Cibies fitted to a car years ago, I was able to also purchase a kind of locking nut. It was a threaded steel ring with a grub screw through the side. The ring was tightened by hand and then the grub screw locked it on. It was successful in that the lights never got stolen, but I've been unable to find anything similar. I thought of using locking wheel nuts, but they are too big (at lease the old ones I have are) and don't really want to drill through the securing bolt and fit a padlock. Any ideas please? Cheers Martyn. Quote Link to post Share on other sites
RogerH Posted January 16, 2017 Report Share Posted January 16, 2017 Hi Martyn, if you can't find a dedicated lock nut how about drilling and tapping a standard nut to take M3 or M4 grub screw and put a flat or indent into the stud. Roger Quote Link to post Share on other sites
Lebro Posted January 16, 2017 Report Share Posted January 16, 2017 Just what I was thinking Bob Quote Link to post Share on other sites
bookend69 Posted January 16, 2017 Author Report Share Posted January 16, 2017 Hi Roger Thank you, good idea. I also thought of rounding off a standard nut in a lathe and then tap a grub screw through the side, but was hoping for a simpler solution. Cheers Martyn Quote Link to post Share on other sites
barkerwilliams Posted January 16, 2017 Report Share Posted January 16, 2017 Shear nuts? http://www.toolstation.com/shop/p58410?mkwid=s3Z3fpJI3_dc&pcrid=142501343890&pkw=&pmt=&product=58410&gclid=CIGS953hxtECFcMW0wodzfACuQ Alan Quote Link to post Share on other sites
mike3739 Posted January 16, 2017 Report Share Posted January 16, 2017 Shear nuts? http://www.toolstation.com/shop/p58410?mkwid=s3Z3fpJI3_dc&pcrid=142501343890&pkw=&pmt=&product=58410&gclid=CIGS953hxtECFcMW0wodzfACuQ Alan What if you need to remove them? Cheers Mike. Quote Link to post Share on other sites
Don H. Posted January 16, 2017 Report Share Posted January 16, 2017 (edited) There are lots of options, or at least ideas, on the web, many of them from driving light suppliers so they're well-adapted to what you're trying to do. Special tool style nuts, hard-to-grip styles. Google is a starting point: https://www.google.com/search?num=50&site=&source=hp&q=driving+light+lock+nuts&oq=driving+light+lo&gs_l=hp.3.1.0l2j0i22i30k1l8.1180.5406.0.7773.17.13.0.4.4.0.131.1358.6j7.13.0....0...1c.1.64.hp..0.16.1239.0..35i39k1j0i131k1j0i20k1.axKR3_xMcoM Edited January 16, 2017 by Don H. Quote Link to post Share on other sites
bookend69 Posted January 16, 2017 Author Report Share Posted January 16, 2017 Thanks That's exactly what I've been searching for! I googled Spot Light Lock Nuts and received thousands of irrelevant responses. I'll check the size and get them ordered. Cheers Martyn Quote Link to post Share on other sites
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