The Multiquip EM923346 1/2 Lock Washer is a genuine OEM fastener component designed for C30HD and LS-series concrete pumps including the C30HD, C30HDG, C30HDZ, C30HDN, C30HDNI, LS40D, LS40TD, LS50TD, LS60TD, LS300, LS400, LS500, and LS600. Sourced directly through Multiquip's authorized parts program, this washer matches the original specification used on the production line. Buying genuine OEM hardware ensures the fastener seats and tensions correctly, maintaining the integrity of every bolted connection it secures.
Key Features
- Genuine OEM Hardness and Temper — Manufactured to the same material grade and spring tension as the original, so the washer bites and holds under the vibration loads common in concrete pump operation.
- Drop-In Hardware Fit — Sized to 1/2 inch to drop straight onto matching fasteners without filing, shimming, or substitution.
- Broad LS and C30HD Series Coverage — Confirmed fitment across C30HD, C30HDG, C30HDZ, C30HDN, C30HDNI, LS40D, LS40TD, LS50TD, LS60TD, LS300, LS400, LS500, and LS600 concrete pump models.
- Vibration Resistance — The split-ring design bites into the mating surface to resist loosening caused by the continuous vibration and pressure cycling of concrete pump operation.
- Exact Part Number Traceability — EM923346 is the current Multiquip OEM part number, making reordering straightforward and ensuring you receive the correct hardware every time.
A lock washer is a small but critical fastener component placed under a nut or bolt head to prevent the fastener from backing out due to vibration or dynamic loading. In concrete pumps, where high-pressure hydraulic and mechanical cycles create constant movement throughout the frame and valve assemblies, even minor fastener loosening can lead to misalignment, fluid leaks, or structural failure at a joint. A worn, flattened, or incorrect lock washer loses its spring tension and no longer grips the mating surface, allowing fasteners to work loose during operation. Using the correct replacement keeps every bolted connection secured to its designed clamping force.
Part Details
| Part Number | EM923346 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | 1/2 Lock Washer |
Compatibility & Fitment
| Name | Model |
|---|---|
| Mayco Pumps | C30HDZ |
| Mayco Pumps | C30HDG |
| Mayco Pumps | LS50TD |
| Mayco Pumps | LS40TD |
| Mayco Pumps | LS300 |
| Mayco Pumps | LS600 |
| Mayco Pumps | LS500 |
| Mayco Pumps | LS400 |
| Mayco Pumps | C30HDNI Zenith |
| Mayco Pumps | C30HDN |
| Mayco Pumps | C30HDNI Precision |
| Mayco Pumps | LS40D |
| Mayco Pumps | LS60TD |
| Mayco Pumps | C30HDNI |
| Mayco Pumps | C30HD |
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.
