The Hillman Group 43815 M12-1.25 Metric Hex Jam Nut， 10-Pack<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Often used when a nut needs to be locked in place without clamping against another object</li><li>They can also be used to secure an item on a fastener without applying force to that object</li><li>Metric jam nut</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41xvajC9hKL.jpg" noproxy>