Description

When you’re changing blades on your Servis Rhino rotary cutter, you’ll notice something different about this nut—it threads the opposite direction. That’s by design. The left hand thread keeps the blade assembly tight no matter how hard your cutter’s working. This self-locking nut is what keeps your blades secure while you’re cutting through thick brush or mowing tall grass.

What You’re Getting

Left hand threading that prevents loosening during operation—the blade’s rotation actually tightens it
Self-locking design that grips tight and stays put through vibration and impact
Standard 1″-14 thread size that fits Servis Rhino spindles perfectly
Direct replacement for Servis Rhino 5GL1640—no modifications needed

Built for Real Farm Work

This nut is designed for Servis and Rhino rotary cutters—the workhorses you see cutting ditches, maintaining pastures, and clearing fence rows. These machines take a beating, and the fasteners need to be just as tough. Works with the standard blade bolt kit used across most Servis models.

Made to Last

AgSmart builds this nut to handle the constant shock and vibration that comes with brush cutting. The self-locking feature means it won’t back off over time, and the left hand thread design works with the blade rotation instead of against it.

Good to Know

Remember, this threads backwards from what you’re used to—lefty tighty, righty loosey. When you’re installing it, turn counterclockwise to tighten. Check your blade bolts for wear while you’ve got things apart—they take the same punishment as the nut and might need replacing too.