The Multiquip 511495 is a genuine OEM Lock Nut 1" NC designed for Essick Mixer, Whiteman Mixer, and WTB-16 Power Buggy series equipment. As an authorized Multiquip OEM part, the 511495 delivers the exact thread specification and holding strength required to maintain secure fastening in demanding mixing and material-handling applications. Confirmed fitment includes EM120P Series, EM120S Series, EM120, WM120PH, WM120SH, WTB-16, and WTB-16PD models. Sourced direct from Multiquip, this lock nut is a drop-in replacement that installs exactly as the original.
Key Features
- Correct Thread Engagement — Cut to 1" NC (National Coarse) specification, ensuring full thread engagement and rated clamping load on matching fastener assemblies.
- Genuine OEM Construction — Manufactured to Multiquip's original material and hardness standards, providing the torque resistance and vibration retention you expect from a locking fastener on high-cycle equipment.
- Broad Mixer and Buggy Fitment — Verified for EM120P Series, EM120S Series, EM120, WM120PH, WM120SH, WTB-16, and WTB-16PD models — one part covering multiple machines in your fleet.
- Structural Integrity Under Load — A properly torqued lock nut prevents critical joints from backing off under continuous vibration and rotation, protecting surrounding components from accelerated wear.
- Direct Replacement — Matches the original fastener profile and locking mechanism so installation requires no additional hardware or modification to existing mounts.
A lock nut is a specialized fastener engineered to resist loosening under vibration, rotational load, and thermal cycling — conditions that are constant on concrete mixers and power buggies during operation. Unlike a standard nut, a lock nut incorporates a locking feature — such as a deformed thread section or nylon insert — that grips the mating bolt and maintains clamp force even as the machine moves and vibrates. When a lock nut wears, strips, or loosens, the fastened joint loses clamping force, which can allow components to shift, accelerate wear on adjacent parts, or lead to mechanical failure at critical points in the drivetrain or drum assembly.
For questions about fitment or to confirm this is the right part for your machine, contact the DHS Equipment team before ordering.
Part Details
| Part Number | 511495 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Lock Nut 1" NC |
Compatibility & Fitment
| Name | Model |
|---|---|
| Essick Mixers | EM120P Series |
| Essick Mixers | EM120S Series |
| Whiteman Mixers | WM120PH |
| Whiteman Mixers | WM120SH |
| Essick Mixers | EM120 |
| Power Buggies | WTB-16 |
| Power Buggies | WTB-16PD |
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.
