The Wacker Neuson is a genuine OEM Lock Nut M4 designed for the BS50-4s, BS60-4s, BS60-4s EU, BS50-4HO EU, DS70, DS70Y, DS720 vibratory rammer series. As a factory-sourced fastener, part is manufactured to the exact thread specification and locking torque required to maintain structural integrity across Wacker Neuson's gasoline and diesel rammer lineup. This Lock Nut M4 is a direct OEM replacement, ensuring compatibility across a wide range of rammer configurations — from 280 mm to 330 mm shoe variants. Keeping critical fasteners like the in proper condition is essential to safe, consistent rammer operation on the jobsite.
Key Features
- Genuine OEM Thread Specification — Manufactured to the exact M4 thread pitch and locking torque required by Wacker Neuson, ensuring the nut seats and holds correctly without deforming or backing off under vibration.
- Vibration-Resistant Locking Design — The locking feature is engineered specifically for high-cycle vibratory applications, resisting the constant impact and oscillation that rammer operation generates.
- Broad Rammer Compatibility — Fits BS50-4s, BS60-4s, BS60-4s EU, BS50-4HO EU, DS70, DS70Y, and DS720 models across multiple shoe sizes and regional configurations.
- Drop-In Fastener Replacement — Matches the OEM M4 profile exactly, so installation requires no reworking of mating threads or hardware — swap out and torque down.
- Preserves Structural Integrity — A failed or backed-out lock nut can allow critical assemblies to shift or separate during operation; replacing with the correct OEM part restores secure clamping force.
A lock nut is a fastener designed to resist loosening under vibration, shock load, or dynamic stress. On a vibratory rammer like the BS or DS series, where the entire machine undergoes thousands of high-force impacts per minute, standard fasteners can gradually back out and compromise the assembly they secure. The locking element — whether a nylon insert, distorted thread, or prevailing-torque feature — maintains clamping force even as the machine cycles continuously. When a lock nut fails, strips, or goes missing, the components it holds can shift, creating misalignment, accelerated wear, or an unsafe operating condition. Replacing it promptly with the correct OEM part restores the clamping integrity the assembly depends on.
Part Details
| Part Number | 5000163638 |
|---|---|
| Old Part Number | 0163638 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Lock Nut M4 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Four-cycle Rammer,280mm/11in S hoe | BS50-4s | 5000620322, 5200000644, 5200000662 |
| BS60-4s RMR,11 PL SHOE 40s | BS60-4s | 5000620323, 5200000647, 5200000667, 5200000674, 5200000675, 5200011110, 5200011111 |
| Four-cycle Rammer,280mm/11in S hoe | BS60-4s EU | 5000620388, 5000620819, 5000620816, 5200003883, 5200004239 |
| DS70 Vibratory Rammer, 11" Plastic Shoe EPA | DS70 | 5000620049, 5000620050, 5000620052, 5000620053, 5000620054, 5000620911, 5000009342, 5000009402, 5000009403 |
| Diesel Vibratory Rammer, 280mm /11in Shoe | DS720 | 5000008200, 5000009059, 5000009060, 5000009309 |
| Vibratory Rammer with 280mm/11 in Shoe | BS50-4HO EU | 5000620818 |
| DS70Y 13" | DS70Y 13in | 5100030612 |
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.
