Multiquip 030212300 Lock Washer

The Multiquip 030212300 is a genuine OEM Lock Washer designed for a broad range of Multiquip equipment including trash pumps, plate compactors, and walk-behind rollers. This OEM-sourced fastener hardware ensures correct tension and vibration resistance exactly as specified for the machines it serves. Compatible models include the MQ62TDD, QPT405SLT, MVHeR60, MVC90H, MRH800GS, MRH601DS, RW1403HF, RW1404, RW1404MR, RW1504HF, RW1810, and RW3010. Using the correct Multiquip 030212300 Lock Washer keeps threaded fastener connections secure under the continuous vibration loads these machines generate.

Key Features

• Genuine OEM Fastener Grade — Manufactured to Multiquip's original material and hardness specifications, ensuring the correct bite and spring tension for high-vibration applications.
• Drop-In Replacement — Matches the original bore diameter and outer profile for direct installation with no reworking of mating hardware.
• Wide Equipment Compatibility — Fits trash pump MQ62TDD, centrifugal pump QPT405SLT, plate compactors MVHeR60 and MVC90H, and rollers including RW1404, RW1404MR, RW1504HF, RW1403HF, RW1810, RW3010, MRH800GS, and MRH601DS.
• Vibration-Resistant Locking — The locking profile bites into the fastener and mating surface to resist loosening under the constant mechanical vibration inherent to compaction and pumping equipment.
• Fastener Integrity Under Load — A correctly seated lock washer prevents fastener back-off that can lead to component misalignment, fluid leaks, or structural looseness during operation.

A lock washer is a hardened fastener component installed beneath a nut or bolt head to prevent the fastener from loosening due to vibration or dynamic loading. On equipment like plate compactors, rollers, and trash pumps — all of which generate significant mechanical vibration during normal operation — lock washers play a critical role in maintaining the integrity of assembled joints. When a lock washer wears flat, cracks, or is omitted, fasteners can gradually back off, leading to loose components, accelerated wear on surrounding parts, or unsafe operating conditions. Replacing worn or damaged lock washers with the correct OEM part is a straightforward step that protects the larger assembly.

For questions about fitment or to confirm compatibility with your specific unit, contact the DHS Equipment team for assistance.

Part Details

Compatibility & Fitment

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.