Multiquip 15518-004 Nyloc Nut M4-0.7

The Multiquip 15518-004 is a genuine OEM Nyloc Nut M4-0.7 designed for Multiquip and Whiteman ride-on power trowel models including the STXDF, LD6, LD6SL, PRX, MD80, MD105, and LD60 series. As a direct OEM replacement, the 15518-004 is manufactured to the same specifications as the original hardware installed at the factory, ensuring a correct, secure fit without guesswork. Sourced through DHS Equipment, this fastener is the same part supplied through Multiquip's authorized parts network, so you can be confident you're installing the right component. Verify your model code before ordering to confirm compatibility with your specific machine configuration.

Key Features

• OEM-Grade Locking Hardware — The nylon insert collar is matched to M4-0.7 thread pitch, delivering the same torque resistance and vibration hold as the original fastener on your trowel.
• Drop-In Thread Compatibility — Threads directly onto existing M4-0.7 fastener locations with no chasing, tapping, or modification to the mating hardware.
• Broad Ride-On Trowel Fitment — Compatible with STXDF, LD6, LD6SL, PRX, MD80, MD105, and LD60 ride-on power trowel models, covering both hydrostatic and hybrid machine families.
• Vibration Resistance Where It Counts — The nylon locking insert prevents loosening under the continuous vibration loads produced during finishing operations, maintaining secure connections throughout the work cycle.
• Genuine Multiquip OEM Part — Supplied under part number 15518-004, this is the same fastener used in original equipment assembly, not a generic hardware substitute.

A nyloc nut is a standard hex nut fitted with a nylon insert collar that grips the mating bolt threads and resists loosening caused by vibration and dynamic loading. On ride-on power trowels, which operate under sustained mechanical vibration during concrete finishing, fastener integrity is critical — a loose or failed nut at a key connection point can lead to component misalignment, premature wear on surrounding parts, or a complete loss of the fastened assembly. Replacing worn or missing nyloc nuts with the correct OEM-specified hardware like the Multiquip 15518-004 ensures fastener joints maintain their designed clamping force throughout the service life of the machine.

Fits: STXDF | LD6 | LD6SL | PRX | MD80 | MD105 | LD60

For fitment questions or help confirming compatibility with your machine, contact DHS Equipment directly.

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.