The Multiquip 15518 is a genuine OEM Nyloc Nut M4-0.7 designed for Multiquip ride-on power trowels and power floats, including the STXDF, LD6, LD6SL, LD60, PRX, MD80, and MD105 series. As an authorized Multiquip OEM part, the 15518 delivers the exact thread pitch, dimensional tolerancing, and nylon insert retention required by the original machine design. Sourced directly through Multiquip's OEM supply chain and sold by DHS Equipment, this nut is a direct, verified fit for the models listed. Keeping the correct fasteners in your service inventory helps you maintain these machines confidently and get them back to work without second-guessing compatibility.
Key Features
- Nylon Insert Locking: The integrated nylon collar grips the mating thread under vibration, resisting loosening during trowel operation — critical on machines that generate continuous rotational forces.
- Exact M4-0.7 Thread Specification: Matches the OEM thread pitch and diameter exactly, threading in cleanly without chasing or reworking existing fastener locations.
- Broad Ride-On Trowel Fitment: Confirmed for STXDF, LD6, LD6SL, LD60, PRX, MD80, and MD105 series ride-on trowels and power floats — one part number covering multiple machines in the Multiquip lineup.
- Genuine OEM Quality: Manufactured to the same material grade and torque retention standard as the original hardware, ensuring the fastener performs as designed throughout the service interval.
- Safety-Critical Fastener Integrity: On rotating machinery like ride-on trowels, a failed or incorrect fastener can compromise guard, blade, or drivetrain retention — using the correct OEM-spec nut maintains mechanical integrity where it counts.
A nyloc nut — also called a nylon insert lock nut — uses a ring of nylon bonded inside the top of the nut to create friction against the bolt or stud thread, preventing the fastener from backing out under vibration or dynamic load. On ride-on power trowels, where rotating blade assemblies and hydraulic drivetrain components generate constant vibration and torque cycling, standard hex nuts can work loose over time. The nyloc design eliminates this risk without requiring thread-locking compounds or secondary locking hardware. When this fastener is missing, damaged, or replaced with the wrong size, the components it secures can shift or detach, leading to mechanical failure or unsafe operating conditions.
For fitment questions or to confirm this part is correct for your machine's serial number, contact the DHS Equipment team directly.
Part Details
| Part Number | 15518 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Nyloc Nut M4-0.7 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | STXDF |
| Whiteman Ride-On Power Trowels | LD6/LD6SL |
| Ride-On Power Float | PRX |
| Hydraulic Ride-On Power Trowels | MD80 |
| Hydraulic Ride-On Power Trowels | MD105 |
| Whiteman Ride-On Power Trowels | LD60 |
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.
