The Multiquip 20438 is a genuine OEM HHC Screw 3/8-16 x 5.00 designed for Whiteman ride-on roller screeds and Whiteman power trowels across multiple series. As a direct OEM replacement, this fastener is manufactured to the same specifications as the original hardware, ensuring a correct, consistent fit on WRS5200, WRS5200DFPU, and WRSPUDF roller screeds, as well as J36-M30 and J36-M30 Series trowels, B46 walk-behind trowels, and HDA-Series equipment. Sourcing the correct grade and dimension of hardware matters — using an undersized or incorrect fastener in structural and mechanical assemblies can compromise both equipment integrity and operator safety. Keep part number 20438 on hand as part of your standard hardware inventory for scheduled maintenance and field repairs.
Key Features
- Correct Thread Specification: — Sized at 3/8-16 x 5.00, this hex head cap screw matches the original thread pitch and length specified for these assemblies — no reworking or chasing threads required.
- Genuine OEM Hardware: — Supplied as a genuine Multiquip OEM part, this screw meets the same material grade and tensile requirements as the fastener installed at the factory.
- Broad Fitment Across Whiteman Equipment: — Compatible with WRS5200, WRS5200DFPU, and WRSPUDF roller screeds, plus J36-M30, B46, and HDA-Series Whiteman trowels — one part number covering multiple machines.
- Structural Integrity: — Fasteners of this size and thread class are commonly used in load-bearing and mechanically critical connection points; using the correct OEM specification maintains clamping force and joint strength under operational vibration and stress.
- Safety-Critical Application: — On rotating and moving equipment like trowels and roller screeds, correct fastener specification is essential — an incorrect fastener can loosen under vibration and create a hazard for the operator and surrounding crew.
A hex head cap screw (HHC) is a standard threaded fastener used throughout construction equipment to secure components at structural and mechanical connection points. The 3/8-16 designation identifies the thread diameter and coarse thread pitch, while the 5.00 inch length determines how deeply it engages the mating material or nut. When a fastener of this type is worn, cross-threaded, or substituted with an incorrect grade, it can fail to maintain proper clamping load, leading to looseness, vibration-related joint movement, or component separation during operation. Using the OEM-specified 20438 ensures the correct tensile strength, thread engagement, and dimensional fit every time.
Part Details
| Part Number | 20438 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | HHC Screw 3/8-16 x 5.00 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Ride-On Roller Screeds | WRS5200 |
| Ride-On Roller Screeds | WRS5200DFPU |
| Ride-On Roller Screeds | WRSPUDF |
| Whiteman Ride-On Power Trowels | J36-M30 |
| Whiteman Walk-Behind Power Trowels | B46 |
| Whiteman Walk-Behind Power Trowels | HDA-SERIES |
| Whiteman Walk-Behind Power Trowels | J36-M30 Series |
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.
