Wacker Neuson 5100015858 Hex Lock Nut, 5/16-18, Grade 8

The Wacker Neuson Hex Lock Nut, 5/16-18, Grade 8 is a genuine OEM fastener designed for the Vacuum Ready Sweeper series, including the 60", 72", and 84" Heavy-Duty VRS Pick-Up Broom models. Sourced directly from Wacker Neuson, this nut meets the exact material and thread specification called out in the original assembly — so it installs the same way the factory intended. Grade 8 construction delivers the clamping strength needed to hold up under the vibration and mechanical stress these sweepers generate during operation. Whether you're performing scheduled maintenance or tracking down a fastener failure, having the correct OEM part on hand keeps the repair clean and straightforward.

Key Features

• Grade 8 Clamping Strength — High-tensile construction resists loosening under the continuous vibration loads generated by commercial sweeper operation.
• Locking Thread Retention — Built-in locking feature maintains torque and prevents self-loosening without the need for additional thread-locking compounds.
• Exact 5/16-18 Thread Match — Threads engage directly with the mating fastener in the original assembly, ensuring a clean, true installation every time.
• Genuine OEM Part — Manufactured to Wacker Neuson's own material and dimensional standards, so you're replacing like-for-like rather than approximating with a generic hardware-store substitute.
• Confirmed VRS Sweeper Fitment — Verified for the 60" (5200019636), 72" (5200019637), and 84" (5200019638) Vacuum Ready Sweeper models in the Wacker Neuson Heavy-Duty Pick-Up Broom lineup.

A hex lock nut is a threaded fastener with an integrated locking mechanism — typically a nylon insert or a distorted thread profile — that resists rotation and prevents the nut from backing off under vibration or dynamic loads. In sweeper applications, fasteners are subjected to constant movement and shock as the broom engages the ground surface, making the locking function critical to keeping assemblies tight and properly aligned. When a lock nut fails or is replaced with a standard nut, the joint can loosen progressively, leading to misalignment, accelerated wear on connected components, or outright mechanical failure during operation.

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.