John Deere K40014 Hexagonal Lock Nut is an M13 external prevailing torque nut designed for reliable fastening. This John Deere equipment manufacturer (OEM) part ensures quality and compatibility with your equipment. If you need assistance finding the right John Deere part or accessory, John Deere specialists are available Monday through Friday from 8:00 AM to 5:00 PM (EST) by calling 800-345-2396 or via email. Hartville Hardware strives to provide accurate parts information sourced from systems, but since parts and compatibility can change without notice, contacting Customer Support is if you are unsure about the part you need. Model Number: K40014