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Registered
Join Date: May 2000
Location: Los Alamos, NM, USA
Posts: 6,044
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Roland Kunz called these "poly stop" nuts and stated they were rated for higher temperatures than the normal nylon filled elastic stop nuts. Perhaps they're filled with some other type of polyamide. The nylon filled nuts start to creep around 250 degrees F. I believe he said than in addition to Porsche they could be had from Wurth. This below site in Switzerland is the only web listng I've found so far:
http://translate.google.com/translate?hl=en&sl=de&u=http://shop.kiener-wittlin.ch/listcategory.cfm/CategoryId.1019/Cat.12_Muttern_Sicherungsmuttern%2520Poly-Stop_DIN%2520985%2520INOX%2520A2_file.html%3Fmaxro ws%3D5000&prev=/search%3Fq%3D%2B%2522DIN%2B985%2BINOX%2522%26hl%3D en%26lr%3D%26ie%3DUTF-8%26sa%3DG%26as_qdr%3Dall
Jim
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