The Honda 90101-SP1-003 Tapping Screw (3X8) is a genuine OEM fastener designed for GX630, GX660, GX690, GX700, and GX800 horizontal shaft engines. As a direct Honda OEM component, this screw is produced to the exact dimensions Honda specifies for these large-displacement engines. Confirm your engine's serial number against the fitment table before ordering, as Honda revises part numbers at serial breaks — part number 90101-SP1-003 applies to specific production ranges within the GX630 through GX800 series.
Key Features
- Genuine OEM Fastener — sourced directly from Honda, this screw matches the thread form, head profile, and length that Honda engineers specified for these engines, so it drives and seats the same way as the original.
- 3X8 Tapping Form — the self-tapping thread cuts cleanly into the receiving material, eliminating the need for a pre-tapped hole and making installation straightforward during assembly or service.
- Broad GX Series Coverage — listed for GX630, GX660, GX690, GX700, and GX800 horizontal shaft engines; verify your serial number against the fitment table to confirm applicability to your specific unit.
A tapping screw is a self-threading fastener that forms its own mating thread as it is driven into the base material, creating a secure mechanical joint without requiring a separate nut or pre-tapped hole. In Honda's large-displacement horizontal shaft engines, fasteners like this one secure covers, brackets, and ancillary components, keeping assemblies properly retained through the vibration and thermal cycling of continuous engine operation. A stripped, incorrect, or missing screw of this type can allow components to loosen over time, compromising the integrity of the assembly it holds.
Part Details
| Part Number | 90101-SP1-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Tapping Screw (3X8) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX630, GX660, GX690, GX700, GX800 | 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.
