The Multiquip 506257 is a genuine OEM U-Bolt designed for a range of Multiquip-portfolio equipment including Mayco concrete pump models C30HDNI, C30HDN, C30HDNI Precision, C30HDNI Zenith, and C30HDZ, the Essick mixer EM900SD, and AR-series asphalt ride-on rollers including AR13D, AR13H, AR13HA/HAR, AR13HC. As a factory-sourced component, it meets the same material and dimensional specifications as the part it replaces, ensuring a straightforward swap with no guesswork. DHS Equipment stocks genuine Multiquip OEM parts so you can get the right component the first time and get your equipment back to work.
Key Features
- Genuine OEM Material Grade — Manufactured to Multiquip's original fastener specifications, delivering the correct tensile strength and thread profile for secure clamping in demanding construction applications.
- Drop-In Replacement — Matches the original bolt geometry and thread pattern, so it installs directly into existing mounts and hardware without reworking surrounding components.
- Broad Equipment Compatibility — Verified fit across Mayco concrete pump models C30HDNI, C30HDN, C30HDZ, Essick mixer EM900SD, and AR-series rollers including AR13D, AR13H, AR13HA/HAR, and AR13HC.
- Structural Holding Integrity — A correctly fitted U-Bolt keeps critical assemblies firmly secured under vibration and load; a worn or under-spec fastener can allow component shift, accelerating wear on adjacent parts.
- Fastener Safety Compliance — On concrete pumps and rollers where clamp loads are load-bearing, using an OEM-spec fastener with the correct grade rating is essential to safe machine operation.
A U-Bolt is a two-legged threaded fastener shaped like the letter "U," used to clamp round or structural components — such as pipes, axles, or mounting brackets — firmly to a frame or support. On concrete pumps and mixers, U-Bolts secure delivery line clamps, hose assemblies, and structural mounts that must stay rigid under continuous vibration and pressure. On rollers, they are commonly used to hold axle or drum components in place. When a U-Bolt stretches, corrodes, or fails, the clamped assembly can shift or loosen, potentially causing misalignment, accelerated wear on surrounding components, or loss of operational control. Replacing a worn U-Bolt promptly with a correctly rated OEM part restores the holding force the machine was engineered to depend on.
Part Details
| Part Number | 506257 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | U-Bolt |
Compatibility & Fitment
| Name | Model |
|---|---|
| Mayco Pumps | C30HDNI |
| Essick Mixers | EM900SD |
| Rollers | AR13D |
| Mayco Pumps | C30HDNI Precision |
| Mayco Pumps | C30HDN |
| Mayco Pumps | C30HDNI Zenith |
| Rollers | AR13HA/HAR |
| Rollers | AR13H |
| Rollers | AR13HC |
| Mayco Pumps | C30HDZ |
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.
