The Honda 90021-ZB4-000 Hexagon Bolt (10X210) is a genuine OEM fastener designed for Honda EB, EM, EG, and EX series generators, including the EB3500, EB3800, EB4000, EB5000, EB6500, EG3500, EM3500, EM3800, EM4000, EM5000, EM6500, and EX3300. As a genuine OEM part, this bolt is manufactured to Honda's exact dimensions, ensuring a proper fit within the generator assembly. Sourcing the correct hardware by part number 90021-ZB4-000 is the straightforward way to ensure you have the right fastener for the job.
Key Features
- Genuine OEM Hardware — manufactured by Honda to the exact dimensions specified for these generators, so the thread pitch, shank length, and head size match the original.
- Long-Shank M10 Fastener — the 10X210 designation identifies this as an M10 bolt with a 210 mm shank, a specific-length fastener used in select generator assemblies where a standard short bolt will not reach.
- Broad Generator Compatibility — listed for EB, EM, EG, and EX series Honda generators including the EB3500, EB3800, EB4000, EB5000, EB6500, EG3500, EM3500, EM3800, EM4000, EM5000, EM6500, and EX3300.
- Verify Before You Order — Honda updates fastener specifications at serial number breaks, so confirm your generator's serial number against the fitment table to ensure part number 90021-ZB4-000 is correct for your unit.
A hexagon bolt of this size and length is a structural fastener used in generator assemblies where secure, high-integrity clamping over a longer span is required. Using a bolt of the correct thread pitch, diameter, and length ensures the joint is properly torqued and held without risk of thread mismatch or insufficient engagement. Substituting an incorrect length or thread specification can result in an improperly secured assembly, so matching this part exactly by its Honda part number is the right approach.
Part Details
| Part Number | 90021-ZB4-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Hexagon Bolt (10X210) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB3500, EB3800, EB4000, EB5000, EB6500, EG3500, EM3500, EM3800, EM4000, EM5000, EM6500, EX3300 | 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.
