The Multiquip 22404 is a genuine OEM Coupling Nut 1/2-20 X 2.0 X.75 Hex designed for Multiquip and Whiteman ride-on power trowel models including HTNS5S-2, EHHNK5, and HHNG5. As a direct OEM replacement, part 22404 is produced to the same specifications as the original hardware, ensuring a correct mechanical connection with no guesswork on fitment. Sourced directly through authorized Multiquip distribution, this coupling nut is the exact fastener your machine was built with. DHS Equipment stocks genuine Multiquip parts to keep your finishing equipment running at full capacity.
Key Features
- Correct Thread Specification — 1/2-20 thread pitch with a 2.0 x .75 hex profile matches the OEM fastener dimension exactly, maintaining the clamping force and torque rating of the original assembly.
- Genuine OEM Hardware — Manufactured to Multiquip's original material and dimensional standard, so the coupling maintains its structural integrity under the cyclic loading typical of trowel blade drive systems.
- Confirmed Fitment — Verified for use on HTNS5S-2, EHHNK5, and HHNG5 ride-on power trowels, covering both Multiquip and Whiteman mechanical trowel platforms.
- Blade Drive Reliability — A properly torqued coupling nut keeps the blade spider assembly securely connected; a loose or worn nut can cause vibration, uneven blade pitch, or drive disengagement mid-pour.
- Direct Drop-In Replacement — Installs into the existing coupling assembly using standard hand tools, with no rework or adaptation to surrounding hardware.
The coupling nut on a ride-on power trowel fastens the blade drive coupling assembly, securing the connection between the gearbox output and the blade spider that controls pitch and rotation. This small but critical fastener must maintain consistent clamping force through continuous vibration and mechanical load — if it loosens or strips, the blade assembly can shift, producing uneven float passes or a loss of blade control entirely. Replacing a worn or damaged coupling nut with the correct OEM part restores proper drive engagement and keeps the finishing operation consistent across the full width of the machine.
Part Details
| Part Number | 22404 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Coupling Nut 1/2-20 X 2.0 X .75 Hex |
Compatibility & Fitment
| Name | Model |
|---|---|
| International Ride-On Power Trowels | HTNS5S-2 |
| International Ride-On Power Trowels | EHHNK5 |
| Whiteman Ride-On Power Trowels | HHNG5 |
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.
