The Multiquip 42451 Hex Nut Serrated Flange M12-1.75 is a genuine OEM fastener designed for Multiquip and Whiteman ride-on power trowel models including PRX, HTX6H, LD6, LD6SL, LD60, STXDF, and HTXG6DF. As a direct OEM replacement, this serrated flange nut delivers the correct thread specification and clamping geometry required by the original engineering design. Sourced directly through authorized Multiquip distribution, part number 42451 ensures you are installing the same hardware specified for your machine at the factory. DHS Equipment stocks genuine Multiquip OEM parts to help you get your trowel back in service with confidence.
Key Features
- Genuine OEM Hardware Specification — M12-1.75 thread pitch and serrated flange profile match the original fastener specification exactly, ensuring correct torque retention without substitution guesswork.
- Integrated Serrated Flange Locking — The built-in serrated flange bites into the mating surface as the nut is tightened, providing vibration-resistant clamping without a separate lock washer.
- Broad Ride-On Trowel Fitment — Compatible with PRX hybrid, HTX6H, LD6, LD6SL, LD60, STXDF, and HTXG6DF Whiteman ride-on power trowel models.
- Direct Drop-In Replacement — Threads directly onto existing M12-1.75 fastener positions with no additional hardware or modification needed.
- Structural Connection Integrity — A correctly torqued serrated flange nut maintains critical joint clamping force under the continuous vibration loads generated by trowel blade operation; a loose or worn nut can allow component movement and accelerated wear at the fastener point.
A serrated flange hex nut combines a standard hex nut with an integrated washer-style flange that features fine serrations on its bearing face. When tightened, those serrations embed into the mating surface and resist loosening caused by vibration — a common concern on ride-on power trowels where blade rotation and engine operation create sustained cyclical loads. Using the correct OEM-specified fastener, such as Multiquip 42451, ensures the joint maintains its design clamping force over time. Substituting a non-serrated or incorrectly sized nut can allow gradual loosening, which may lead to component misalignment or fastener failure in service.
Part Details
| Part Number | 42451 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Hex Nut Serrated Flange M12-1.75 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Ride-On Power Float | PRX |
| Whiteman Ride-On Power Trowels | HTX6H |
| Whiteman Ride-On Power Trowels | LD6/LD6SL |
| Whiteman Ride-On Power Trowels | STXDF |
| Whiteman Ride-On Power Trowels | LD60 |
| Whiteman Ride-On Power Trowels | HTXG6DF |
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.
