The Honda 90309-764-L31 Hexagon Lock Nut (5/8 NC) is a genuine OEM fastener designed for MM52 multi-purpose tractors and MM60 compact tractors. As a Honda OEM component, this nut is manufactured to the same specification as the original hardware, ensuring a correct fit without any guesswork. Honda periodically supersedes part numbers at production breaks, so confirm the part number 90309-764-L31 against the fitment table before ordering to make sure this is the right hardware for your machine's serial range.
Key Features
- Genuine OEM Hardware — sourced directly from Honda, this lock nut matches the original specification for MM52 and MM60 tractors, so it installs the same way the factory hardware did
- 5/8 NC Thread Form — the 5/8 NC (National Coarse) thread specification is carried in the part name itself; verify it matches your fastener requirement before ordering
- Tractor Fitment — listed for Honda MM52 multi-purpose tractors and MM60 compact tractors; check your machine's serial number against the compatibility table to confirm the correct application
A hexagon lock nut is a standard fastener with a built-in locking feature — typically a nylon insert or a distorted thread section — that resists loosening under vibration. On compact and multi-purpose tractors like the MM52 and MM60, which generate sustained vibration during operation, maintaining proper fastener torque is essential to keeping assemblies secure over time. A lock nut that has worn, stripped, or been lost needs to be replaced with the correct thread size and locking type to restore the joint to its original holding strength.
Part Details
| Part Number | 90309-764-L31 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Hexagon Lock Nut (5/8 NC) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Compact Tractor | MM60 | All |
| Multi-Purpose Tractor | MM52 | All |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
