The Multiquip 1105821002 is a genuine OEM Bolt Head Washer designed for C30HDNI and C30HDN series concrete pumps. As a factory-sourced component, it meets the exact dimensional and material standards required for proper bolt clamping and load distribution on these machines. This washer is confirmed compatible with C30HDNI, C30HDNI Precision, C30HDNI Zenith, and C30HDN models. Keeping the correct hardware in place is essential to maintaining secure fastener integrity throughout the pump assembly.
Key Features
- Genuine OEM Material Spec — Manufactured to exact thickness and hardness tolerances required for proper load bearing at the bolt head interface, not a generic hardware substitute.
- Drop-In Hardware Fit — Dimensionally matched to the original fastener positions on C30HDNI and C30HDN concrete pump assemblies, seating flush without adjustment.
- Broad C30 Series Compatibility — Fits C30HDN, C30HDNI, C30HDNI Precision, and C30HDNI Zenith concrete pump models from the Multiquip portfolio.
- Consistent Clamping Force — Correct washer geometry distributes bolt load evenly across the mating surface, preventing fastener loosening under the vibration and pressure cycles typical of concrete pump operation.
- Structural Integrity Under Load — Using an undersized or worn washer risks surface deformation and fastener failure; this OEM part maintains the clamping integrity the assembly was engineered around.
A bolt head washer sits between the head of a fastener and the surface it clamps against, spreading the clamping load over a wider area to prevent the bolt from pulling through or damaging the material beneath it. On a concrete pump, where components are subjected to continuous vibration, hydraulic pressure cycles, and heavy slurry loads, maintaining correct fastener tension is critical to keeping the machine operating safely and without leaks or structural loosening. Using an incorrect or worn washer can lead to uneven clamping, fastener fatigue, and premature hardware failure.
DHS Equipment supplies genuine Multiquip OEM parts with part number verification to ensure you receive exactly what your machine requires. For fitment questions or ordering assistance, contact the DHS Equipment parts team directly.
Part Details
| Part Number | 1105821002 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Bolt Head Washer |
Compatibility & Fitment
| Name | Model |
|---|---|
| Mayco Pumps | C30HDNI |
| Mayco Pumps | C30HDN |
| Mayco Pumps | C30HDNI Precision |
| Mayco Pumps | C30HDNI Zenith |
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.
