The Multiquip 20057 is a genuine OEM Hex Head Cap Screw 5/8-18 x 4 designed for Whiteman ride-on mechanical power trowel models HHN31V and HHN34TVD. Sourced directly from Multiquip, this fastener meets the exact thread specification, grade, and dimensional tolerance required for your machine. Using the correct OEM screw ensures the joint holds its rated clamping load through the vibration and stress cycles these trowels generate during continuous concrete finishing work. Verify part number 20057 against your parts manual before ordering to confirm fitment for your specific serial number range.
Key Features
- Correct Thread and Dimensional Spec: — 5/8-18 UNF thread form and 4-inch length match the original fastener specification exactly, maintaining proper clamping force at the joint.
- Genuine OEM Sourcing: — Manufactured to Multiquip's own material and grade standards, so the screw delivers the same tensile and shear performance as the fastener that left the factory.
- Confirmed Fitment: — Verified for HHN31V and HHN34TVD Whiteman 8-foot heavy-duty ride-on mechanical trowels.
- Vibration-Resistant Clamping: — A correctly spec'd fastener in a trowel application resists backing out under continuous rotational load, keeping critical assemblies seated and aligned during operation.
- Structural Integrity: — Using an undergrade or incorrect-length substitute risks joint failure during high-load finishing passes; the 20057 eliminates that risk by matching the engineered design specification.
A hex head cap screw is a structural fastener used to clamp two or more machine components together under a controlled and repeatable load. In a ride-on power trowel, fasteners of this size and thread grade are commonly used in drive assemblies, rotor frames, and major structural joints where the connection must remain tight under sustained vibration and operator-induced load cycles. When a fastener of the wrong grade, thread pitch, or length is substituted, the joint can lose clamping force, leading to component movement, accelerated wear on mating surfaces, and potential structural failure. Using the correct Multiquip 20057 replacement ensures the joint performs as originally engineered.
For fitment questions or to confirm compatibility with your machine's serial number, contact the DHS Equipment team directly.
Part Details
| Part Number | 20057 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Hex Head Cap Screw 5/8-18 x 4 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HHN31V |
| Whiteman Ride-On Power Trowels | HHN34TVD |
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.
