The Honda 90361-750-881 Lock Flange Nut (3/8X16) is a genuine OEM fastener designed for the HT3810 lawn tractor. As a direct Honda OEM component, this nut is manufactured to the same specification as the original hardware, ensuring a correct, secure fit without the guesswork of aftermarket substitutes. Sourced directly through authorized Honda parts channels, this is the exact fastener called out in the HT3810 service documentation.
Key Features
- Genuine OEM Honda Hardware — manufactured to Honda's original specification, so the locking and clamping characteristics match what the HT3810 was engineered around
- 3/8X16 Thread Specification — the 3/8-16 UNC thread size and flange profile are exact-match to the original, so this nut installs without modification
- Flange Design Keeps Fasteners Secure — the integrated flange distributes clamping load across a wider bearing surface, resisting loosening under the vibration a lawn tractor generates in normal operation
- Confirm Your Serial Number — Honda updates hardware specifications at production breaks, so check your HT3810 serial number against the fitment table before ordering to confirm this is the correct fastener for your unit
A lock flange nut combines a serrated or flanged bearing face with a prevailing-torque locking feature, allowing it to resist self-loosening under vibration without a separate washer. On a lawn tractor like the HT3810, fasteners of this type are used at points where sustained vibration would otherwise work a standard nut loose over time. When a lock flange nut is worn, stripped, or replaced with an incorrect thread size, the joint it secures can lose clamping force, leading to looseness or movement in the fastened assembly. Using the correct OEM replacement maintains the clamping integrity the original design relied on.
Part Details
| Part Number | 90361-750-881 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Lock Flange Nut (3/8X16) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Lawn Tractor | HT3810 | 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.
