The Hillman Group 829754 10 by 32-Inch Stainless Steel Nylon Insert Locknut， 100-Pack<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Nylon Insert Lock Nuts have a captive undersized nylon washer that creates friction with the mating threads to prevent loosening</li><li>Helps resist the effects of vibration and other forces</li><li>Stainless Steel</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51SWuZ9APgL.jpg" noproxy>