The Multiquip 0300521 is a genuine OEM Toothed Lock Washer QP-D30D.N.O. designed for the D30D series pump. As a factory-sourced component, this washer meets the exact specifications set by Multiquip, ensuring a correct and secure installation every time. Fitment is confirmed for D30D equipment, making it a straightforward service replacement when the original washer shows wear or damage.
Key Features
- Genuine OEM Locking Performance — Sourced directly from Multiquip, this toothed lock washer delivers the correct bite and clamping force required to hold fastener assemblies securely under vibration and load.
- Exact Replacement Fit — Dimensioned to match the original hardware on D30D pump assemblies, this washer seats and torques correctly without rework or shimming.
- Confirmed D30D Compatibility — Verified fitment for the Multiquip D30D series, so you can order with confidence and get the machine back in service quickly.
- Vibration Resistance — The toothed profile bites into mating surfaces to resist loosening caused by pump vibration, helping maintain joint integrity across demanding work cycles.
- Corrosion-Resistant Construction — Built to withstand the wet and abrasive environments typical of pump operation, maintaining holding strength over extended service intervals.
A toothed lock washer is a hardened fastener component placed beneath a bolt or nut to prevent it from loosening due to vibration, rotation, or thermal cycling. The serrated teeth bite into both the fastener and the mating surface, creating mechanical resistance that keeps critical joints tight during operation. When a lock washer wears flat or is damaged, fasteners in pump housings and assemblies can back out over time, leading to misalignment, leaks, or component separation that can compromise pump performance and safety.
Part Details
| Part Number | 0300521 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Toothed Lock Washer QP-D30D.N.O. |
Compatibility & Fitment
| Name | Model |
|---|---|
| D30D | D30D |
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.
