The Multiquip 16677 Nyloc Nut 7/16-14 Grade 8 is a genuine OEM fastener designed for WRS5200DFPU, WRS5200, and WRSPUDF ride-on roller screed equipment. As a direct Multiquip OEM part, 16677 is manufactured to the exact thread specification, grade rating, and nylon locking insert standard required by these machines. Sourcing the correct grade-rated hardware keeps critical assemblies secured under the vibration and load cycles that roller screeds generate during concrete finishing operations.
Key Features
- Grade 8 Tensile Strength: — Higher-strength fastener rated for the mechanical loads and vibration stress found in roller screed assemblies, where an under-rated nut can back off or fail under continuous operation.
- Nylon Locking Insert: — The integrated nyloc collar grips the bolt thread and resists loosening caused by machine vibration — no separate locking washer required.
- 7/16-14 Thread Specification: — Exact UNC thread pitch matches the mating fastener positions on WRS5200DFPU, WRS5200, and WRSPUDF roller screeds for a direct installation.
- Genuine OEM Part: — Sourced directly from Multiquip, part number 16677 meets the same material and dimensional standards as the hardware originally installed on these roller screeds.
- Broad WRS Series Fitment: — Confirmed fit for WRS5200DFPU, WRS5200, and WRSPUDF ride-on roller screed models, covering both standard and dual-fuel platform variants.
A nyloc nut is a standard hex nut with a nylon insert molded into one end of the collar. When threaded onto a bolt, the nylon ring deforms slightly around the thread form, creating friction that resists self-loosening under vibration — a common cause of fastener failure on equipment that runs with continuous mechanical movement. On ride-on roller screeds, which operate across actively vibrating concrete surfaces, maintaining correct fastener torque and retention is essential to keeping structural and drivetrain connections secure. A worn, stripped, or incorrect-grade nut in these positions can allow joint movement, accelerate component wear, and compromise machine integrity during finishing operations.
Part Details
| Part Number | 16677 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Nyloc Nut 7/16-14 Grade 8 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Ride-On Roller Screeds | WRS5200DFPU |
| Ride-On Roller Screeds | WRS5200 |
| Ride-On Roller Screeds | WRSPUDF |
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.
