The Wacker Neuson Screw is a genuine OEM Screw designed for the APT4S and APT4T pump series, including surge brake, electric brake, and cold weather configurations. As a factory-sourced component, this screw is manufactured to the exact tolerances and material specifications Wacker Neuson requires for proper assembly and long-term performance across the full APT pump lineup. Whether you are servicing an APT4S Pump with Skid or an APT4T Pump with Electric Brake in cold weather operation, part number delivers a straight drop-in replacement with no guesswork. Keeping the right hardware in place is essential to maintaining the structural integrity of pump assemblies — source the correct part from the start.
Key Features
- Genuine OEM Fastener Spec: — Manufactured to Wacker Neuson's exact thread pitch, head profile, and material grade — critical for maintaining correct clamping load in pump assembly applications.
- Direct Hardware Match: — Replaces the original 5200021602 Screw with an identical fit, threading directly into existing mounting points without rework or modification to mating components.
- Broad APT Pump Compatibility: — Fits APT4S and APT4T pump models across surge brake, electric brake, and cold weather variants, covering the full range of APT series configurations.
- Assembly Integrity: — A correctly torqued, properly spec'd screw maintains housing and component alignment; a stripped, incorrect, or missing fastener can lead to pump component loosening, vibration damage, or fluid pathway misalignment.
- Cold Weather Rated Configuration Support: — Verified for use in cold weather pump variants (APT4S CW and APT4T CW), ensuring the hardware holds up in demanding low-temperature service conditions.
A screw in a pump assembly does more than hold parts together — it maintains the precise clamping force needed to keep housings sealed, components aligned, and vibration from working hardware loose during operation. In hydraulic and fluid pump applications like the APT series, even a single fastener that is the wrong thread, length, or material grade can compromise the integrity of the entire assembly. When a screw fails, stretches, or is replaced with an incorrect substitute, the result can be loosening under load, component misalignment, or leaks at mating surfaces — all of which take a pump out of service.
Part Details
| Part Number | 5200021602 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Screw |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
| APT4T Pump, Surge Brake, Cold Weather | APT4T CW | 5200019792, 5200019793 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
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.
