The Multiquip 20473 is a genuine OEM HHC Screw 3/8"-16 x 3" Full Thread Grade 5 designed for Whiteman ride-on and walk-behind power trowels, including the HTXD6i, STXD6i, and HDA-Series. As a direct Multiquip OEM component, 20473 is manufactured to the same specifications as the original hardware installed at the factory, ensuring a correct fit across all designated trowel models. Sourcing the correct grade-rated fastener matters — using an undersized or incorrect-grade screw in a trowel application can compromise the structural integrity of the assembly it secures. DHS Equipment supplies this part directly, so you can verify fitment and get the right component the first time.
Key Features
- Grade 5 Tensile Strength — Rated Grade 5 hardware delivers the tensile and shear resistance required for the mechanical loads found in power trowel assemblies, where vibration and torque are constant.
- Full Thread Profile — The 3/8"-16 x 3" full thread configuration provides maximum thread engagement across the full bolt length, giving secure clamping force in deep or through-hole applications.
- Genuine OEM Part — Supplied as an authentic Multiquip OEM component, part 20473 matches the original hardware spec exactly — no guesswork on thread pitch, grip length, or head dimensions.
- Broad Trowel Family Coverage — Fits HTXD6i and STXD6i ride-on hydrostatic trowels as well as HDA-Series heavy-duty walk-behind trowels, making it a versatile fastener to stock for mixed trowel fleets.
- Correct Hardware Prevents Assembly Failure — A worn, stripped, or incorrect-grade fastener in a trowel frame or blade assembly can lead to loosening under load; replacing with the correct OEM-spec screw restores the integrity of the joint.
The HHC Screw 3/8"-16 x 3" Full Thread Grade 5 is a hex head cap screw used to fasten structural and mechanical components on power trowel equipment. The full thread design means threads run the entire length of the shank, maximizing grip in applications where the fastener passes through a clearance hole and threads into a nut or tapped bore. Grade 5 classification indicates the screw meets a defined minimum tensile strength standard, making it appropriate for dynamic load environments like rotating trowel machinery where vibration stress is ongoing. When this fastener wears, corrodes, or is replaced with an incorrect grade, the joint it secures can lose clamp load — potentially causing movement, misalignment, or component separation during operation.
Part Details
| Part Number | 20473 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | HHC Screw 3/8"-16 x 3" Full Thread Grade 5 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HTXD6i |
| Whiteman Ride-On Power Trowels | STXD6i |
| Whiteman Walk-Behind Power Trowels | HDA-SERIES |
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.
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