The Honda 90303-769-M01 Hexagon Lock Nut (1/2 NC) is a genuine OEM replacement built for the MM52 multi-purpose tractor. As a direct Honda OEM part, it is manufactured to the same specifications as the original hardware that left the factory on your machine. Honda supersedes fastener part numbers at production breaks, so confirm your tractor's serial number against the fitment table before ordering to ensure this is the correct listing for your unit.
Key Features
- Genuine Honda OEM Hardware — sourced directly from Honda, this lock nut matches the original fastener specification for the MM52 multi-purpose tractor.
- 1/2 NC Thread Form — the UNC thread designation identifies the thread pitch and diameter, so confirm this matches the fastener position you are replacing before ordering.
- Locking Design — the lock nut format resists loosening under vibration and operational loads, maintaining the integrity of the joint it secures.
- Serial Number Verification Recommended — Honda updates hardware specifications across production runs; check your MM52 serial number against the compatibility table to confirm this is the correct part for your machine.
A lock nut is a fastener designed to resist self-loosening caused by vibration and dynamic loads. Unlike a standard hex nut, the locking feature — whether a nylon insert, distorted thread, or prevailing-torque design — creates additional resistance that keeps the nut seated under the conditions a working tractor generates. When a lock nut on the MM52 is lost, damaged, or fails to hold its position, the joint it was securing can work loose over time, affecting the function and stability of the assembly it holds together. Replacing a worn or missing lock nut with the correct genuine OEM part restores the joint to its original specification.
Part Details
| Part Number | 90303-769-M01 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Hexagon Lock Nut (1/2 NC) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| 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.
