The Honda 90009-Z3F-901 Socket Bolt (5X25) is a genuine OEM fastener designed for GX35 and GX50 horizontal shaft engines, as well as HHT35 and UMC435 trimmers. As a direct Honda OEM component, this bolt is manufactured to the exact dimensions and thread specification Honda requires for the assemblies it secures on these machines. Confirm your model and serial number against the fitment table before ordering, as Honda supersedes hardware at production breaks.
Key Features
- Genuine OEM Hardware — sourced directly from Honda, this bolt matches the exact head geometry, thread pitch, and shank length (5 mm × 25 mm) specified for these engines and trimmers
- Direct Replacement — engineered to the same dimensional standard as the original, so it drives home with a standard socket or hex key without rework
- Broad Fitment — listed for GX35 and GX50 horizontal shaft engines and HHT35 and UMC435 trimmers; verify your serial number against the fitment table to confirm the correct bolt for your specific unit
- Correct Clamping Load — a bolt of the proper length and thread form ensures the joint reaches its intended clamp load; an undersized or incorrect substitute risks joint movement and stripped threads
A socket bolt is a hex-drive cap screw used to fasten components together within the engine or trimmer assembly. The socket-head profile allows it to be driven in confined spaces where a conventional bolt head would not clear, making it a common fastener choice in compact powerhead designs like those found in the GX35 and GX50. When a bolt of incorrect length or thread is used in its place, the clamping force across the joint is compromised, which can lead to loosening under vibration — a common operating condition for handheld trimmers and small-displacement engines alike.
Part Details
| Part Number | 90009-Z3F-901 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Socket Bolt (5X25) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX35, GX50 | All |
| Trimmer | HHT35 | 2949969-9999999 |
| Trimmer | UMC435 | 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.
