The Honda 90108-VA9-000 UBS Bolt (8x50) is a genuine OEM fastener designed for the HR173 lawn mower. As a direct Honda OEM part, this bolt is produced to the same specifications as the original hardware fitted at the factory. Sourcing the correct fastener by part number 90108-VA9-000 ensures the right thread pitch, shank length, and head geometry for the application. Always confirm your mower's serial number against the fitment table before ordering, as Honda updates hardware specifications at serial breaks.
Key Features
- Genuine Honda OEM Hardware — sourced directly from Honda, this bolt matches the original specification for the HR173 in thread size, shank length, and head type.
- Exact Dimensional Fit — the 8x50 sizing is specific to this application; using an incorrect bolt risks improper clamping or thread damage, so verify part number 90108-VA9-000 against your parts diagram.
- Serial Number Verification Recommended — Honda revises hardware across production runs, so check your HR173 serial number against the compatibility table to confirm this is the correct bolt for your unit.
An UBS bolt is a flanged hex bolt combining a hex-drive head with an integrated flange that distributes clamping load across a wider bearing surface, eliminating the need for a separate washer. On the HR173 lawn mower, correctly specified fasteners maintain the structural integrity of the assemblies they secure — an undersized, oversized, or incorrect-pitch bolt can strip threads or allow components to work loose under the vibration of normal mowing operation.
Part Details
| Part Number | 90108-VA9-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | UBS Bolt (8x50) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Lawn Mower | HR173 | 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.
