The Multiquip HUP51999 Pivot Bolt Assembly is a genuine OEM component designed for STH and HTH-SERIES hydrostatic ride-on trowels. As a direct OEM replacement sourced through Multiquip's authorized parts network, this assembly is built to the same specification as the original hardware installed at the factory. DHS Equipment stocks this part to keep your hydrostatic ride-on trowel performing at its best with zero guesswork on fitment. Confirm your model against the STH and HTH-SERIES families before ordering to ensure a correct match.
Key Features
- OEM-Grade Hardware Integrity — Manufactured to the exact material grade and thread specification of the original pivot hardware, ensuring consistent clamping force and joint stability under continuous operational load.
- Drop-In Replacement — Engineered to the same dimensional profile as the factory-installed assembly, so it seats and torques correctly without rework or modification to mounting points.
- Confirmed Fitment for STH and HTH-SERIES — Verified for hydrostatic ride-on trowel models in the STH and HTH-SERIES families, covering a range of heavy-duty finishing equipment in the Multiquip lineup.
- Structural Pivot Performance — A correctly functioning pivot bolt assembly maintains precise blade pitch geometry; a worn or loose bolt can cause uneven blade engagement and loss of control over trowel finish quality.
- Genuine OEM Assurance — Supplied as a genuine Multiquip OEM part, meaning the alloy grade, thread pitch, and head geometry are validated against the original engineering drawings for this assembly.
The pivot bolt assembly serves as the primary fastener at a pivoting joint on the ride-on trowel, securing components that must rotate or articulate under load while maintaining precise alignment. On hydrostatic ride-on trowels like the STH and HTH-SERIES machines, these joints are subject to continuous vibration and cyclic stress during finishing passes, making hardware integrity critical to consistent blade pitch control. When a pivot bolt wears, stretches, or fails, the joint develops play that translates directly into irregular blade pressure across the concrete surface, compromising finish quality and potentially creating unsafe operating conditions.
For help confirming this part fits your specific machine, contact the DHS Equipment parts team with your model and serial number.
Part Details
| Part Number | HUP51999 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Pivot Bolt Assembly |
Compatibility & Fitment
| Name | Model |
|---|---|
| Hydrostatic Ride-On Trowels | STH |
| Hydrostatic Ride-On Trowels | HTH-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.
