The Wacker Neuson Hexagonal Flange Head Screw is a genuine OEM hexagonal flange head screw designed for the LTN4Y and LTN5Y light tower series and the APT4S and APT4T portable pump series. Sourced directly through Wacker Neuson, this screw matches the exact thread pitch, head geometry, and flange diameter specified for these machines. Confirmed fitment spans the full LTN4Y and LTN5Y model families — including standard, SA, CH, UK, 60Hz, 120V/60Hz, RH, and HD variants — as well as APT4S and APT4T configurations including surge brake, electric brake, and cold weather models. When you need a fastener that seats flush, clamps correctly, and holds up in demanding field conditions, is the part to order.
Key Features
- Correct Flange Geometry for Proper Clamping Load — The integrated flange distributes clamping force evenly across the mating surface, preventing fastener loosening under vibration without the need for a separate washer.
- Genuine OEM Specification — Manufactured to Wacker Neuson's exact thread class, head height, and material grade, so torque values and load ratings align with the original design intent.
- Direct Drop-In Installation — Matched thread form and flange diameter seat straight into existing bosses and mounting points with no chasing, rethreading, or fitting required.
- Broad Series Compatibility — A single part number covers the full LTN4Y and LTN5Y light tower families and all APT4S and APT4T pump variants, including cold weather editions, simplifying parts ordering across your fleet.
- Vibration Resistance in Mobile Equipment — The flange head design is specifically suited to light towers and pump units that run on trailers and skids, where engine and road vibration can work standard hex cap screws loose over time.
A hexagonal flange head screw combines a standard hex bolt with an integral wide flange beneath the head, effectively acting as a built-in washer. This design spreads the bearing load over a larger surface area, reducing the risk of the fastener pulling through or distorting softer mounting surfaces. In portable equipment like light towers and trailer-mounted pumps — where constant vibration from engines and road travel is a factor — the flange head helps the fastener maintain its clamping load without backing out. A missing or damaged fastener in these applications can allow covers, mounts, or structural panels to shift, leading to misalignment or accelerated wear on surrounding components.
Part Details
| Part Number | 5200019872 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Hexagonal Flange Head Screw |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| LTN5Yp | LTN5Yp | 5100069549 |
| LTN5Y SA | LTN5Y SA | 5100069548 |
| LTN4Y | LTN4Y ME | 5100069545 |
| LTN4Y 60 Hz | LTN4Y 60Hz | 5100069546 |
| LTN4Y SA | LTN4Y SA | 5100069547 |
| LTN4Y | LTN4Y | 5100073603 |
| LTN5Ypk | LTN5Ypk | 5100077880 |
| LTN4Y RH | LTN4Y RH | 5100077620 |
| LTN5Yp HD | LTN5Yp HD | 5100079429 |
| LTN5Y | LTN5Y | 5100069550 |
| LTN5Ypa | LTN5Ypa | 5100069551 |
| LTN5Y CH | LTN5Y CH | 5100069552 |
| LTN5Y UK | LTN5Y UK | 5100069553 |
| LTN4Y 120V/60Hz | LTN4Y 120V/60Hz | 5100075978 |
| 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.
