The Multiquip 033121009 is a genuine OEM Multiquip Mikasa Lock Washer (Toothed) M10 designed for MTX, MT, and MTR series rammers including MTX50HD, MTX60HD, MTX60HF, MTX70HD, MTX70HDR, MTX70HF, MTX80HDR, MTX-i60, MT-E55, MTR40HF, MT85, and MT60H2. As a direct OEM replacement, part 033121009 is manufactured to the same specification as the original hardware installed at the factory, ensuring a proper seating and retention fit without any guesswork. This toothed M10 lock washer is a small but critical fastener component that keeps assemblies securely torqued under the sustained vibration loads that rammers generate during compaction work. Sourced through DHS Equipment, you can trust this part ships as the correct, verified component for your machine.
Key Features
- Genuine OEM Mikasa Hardware Grade — Manufactured to the exact material hardness and tooth geometry specified for Multiquip Mikasa rammer assemblies, ensuring proper bite and holding force under high-vibration operating conditions.
- M10 Toothed Profile for Positive Locking — The serrated tooth pattern bites into mating surfaces on installation, resisting loosening caused by the constant percussive vibration produced during tamping cycles.
- Broad Rammer Series Compatibility — Fits MTX50HD, MTX60HD, MTX60HF, MTX70HD, MTX70HDR, MTX70HF, MTX80HDR, MTX-i60, MT-E55, MTR40HF, MT85, and MT60H2 rammers.
- Drop-In Hardware Replacement — Matches the original M10 fastener stack exactly, so reinstallation follows the standard torque procedure with no additional hardware or modification needed.
- Prevents Fastener Back-Out in Service — A worn or missing lock washer allows critical fasteners to back out during operation, leading to loose assemblies, accelerated wear on mating components, and potential structural failure of the rammer housing or engine mounts.
A lock washer is a hardened fastener insert placed under a bolt or nut to prevent the fastener from loosening due to vibration, thermal cycling, or dynamic loading. In a rammer, where the entire machine is engineered around generating repeated high-force impacts, fastener retention is especially critical — every bolt in the assembly is subjected to constant shock loads that would cause standard flat washers or bare nuts to gradually back out over time. The toothed design of the 033121009 bites into both the fastener face and the mating surface, creating mechanical resistance that maintains clamp load throughout the service interval. When a lock washer is missing or has lost its tooth profile from repeated re-use, fasteners can loosen undetected, compromising structural integrity and accelerating wear across connected components.
Part Details
| Part Number | 033121009 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Multiquip Mikasa Lock Washer (Toothed) M10 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Rammers | MTX-i60 |
| Rammers | MT-E55 |
| Rammers | MTX50HD |
| Rammers | MTX80HDR |
| Rammers | MTX70HD |
| Rammers | MTX60HD |
| Rammers | MTR40HF |
| Rammers | MTX70HDR |
| Rammers | MTX60HF |
| Rammers | MTX70HF |
| Rammers | MT85 |
| Rammers | MT60H2 |
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.
