The Honda 93404-06025-00 Bolt-Washer (6X25) is a genuine OEM flange bolt combining a bolt and integrated washer in a single fastener, designed for Honda GC135, GC160, GC190, GS160, GS190, and GXH50 horizontal shaft engines, EN2000, EN2500, EZ3500, and EZ5000 generators, FG400 and FG500 tillers, and WN20 and WN30 water pumps. As a genuine Honda part, it is manufactured to the same specification as the original hardware that left the factory, ensuring a correct fit without modification. Using the correct OEM fastener matters on Honda equipment — undersized or mismatched hardware can work loose or strip the receiving thread, leading to more involved repairs down the line. Confirm your model and serial number against the fitment table before ordering, as Honda supersedes hardware at production breaks and the correct part number can vary by build date.
Key Features
- Integrated Flange Design — the washer flange is part of the bolt head itself, distributing clamping load evenly and eliminating the need for a separate washer in applications where this fastener is specified.
- Genuine OEM Hardware — manufactured to Honda's original thread pitch and head dimensions, so the fastener seats and torques correctly the first time without chasing threads or shimming.
- Broad Fitment — listed for Honda GC135, GC160, GC190, GS160, GS190, and GXH50 horizontal shaft engines, EN2000, EN2500, EZ3500, and EZ5000 generators, FG400 and FG500 tillers, and WN20 and WN30 water pumps — always verify your serial number against the fitment table.
- Verify Before Ordering — Honda revises hardware specifications at serial number breaks; confirm your unit's serial number matches the fitment data to ensure part number 93404-06025-00 is correct for your specific machine.
A bolt-washer is a fastener with a flange machined as part of the bolt head, functioning as both a bolt and a flat washer in one piece. The integrated flange spreads the clamping force across a wider surface area than a standard bolt head alone, reducing the risk of the fastener pulling through or marking softer mating surfaces. When a bolt-washer is missing or substituted with a standard bolt, the reduced bearing surface can allow the joint to loosen under vibration — a common condition in small engine and power equipment applications where components cycle through repeated load and thermal changes.
Part Details
| Part Number | 93404-06025-00 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Bolt-Washer (6X25) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EN2000, EN2500, EZ3500, EZ5000 | All |
| Horizontal Shaft Engine | GC135, GC160, GC190, GS160, GS190, GXH50 | All |
| Tiller | FG400, FG500 | All |
| Water Pump | WN20, WN30 | 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.
