MTD 712-04064 Flanged Lock Nut This genuine MTD flanged lock nut is engineered to secure critical fastening points on MTD equipment. The integrated flange design distributes pressure evenly across mounting surfaces, while the lock feature prevents vibration-induced loosening during operation. Built to OEM specifications, this replacement part ensures reliable performance and extends equipment longevity. Essential for maintaining proper assembly integrity on MTD lawn mowers, tractors, and outdoor power equipment.