Multiquip 12288 Screw THP 1/4-20 X 1 SS

The Multiquip 12288 is a genuine OEM Screw THP 1/4-20 X 1 SS designed for Whiteman ride-on power trowel models HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, STX55J6, STX55Y6, and HHXD5-ES. As a factory-sourced fastener, it meets the exact material and dimensional specifications Multiquip engineers to these machines. Sourcing the correct OEM hardware ensures proper clamping load and thread engagement where it counts. DHS Equipment supplies this part direct, so you can confirm fitment by model code and order with confidence.

Key Features

• Stainless Steel Grade Fastener — Manufactured in stainless steel for corrosion resistance in demanding outdoor and wet-environment troweling applications.
• Exact Thread and Head Specification — 1/4-20 thread pitch and THP head form match the original mounting points exactly, allowing direct installation without thread modification or chasing.
• Broad HTX and STX Series Coverage — Confirmed fitment across HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, STX55J6, STX55Y6, and HHXD5-ES hydrostatic ride-on power trowels.
• Genuine OEM Sourcing — Supplied directly from Multiquip's parts program, ensuring the fastener meets the torque and load specifications the machine was engineered around.
• Hardware Integrity Matters — Using the correct-spec fastener maintains proper joint clamping across trowel assemblies, preventing loosening under the sustained vibration these machines produce during finish work.

A truss head pan screw in the 1/4-20 size class is used throughout ride-on trowel assemblies to secure panels, guards, brackets, and structural covers. The truss head profile distributes clamping load over a wider bearing surface than a standard pan head, making it well suited to thin sheet metal and composite panel attachments common on trowel machines. When a fastener of this type is missing, stripped, or substituted with an incorrect grade or thread pitch, it can lead to component loosening under vibration, which accelerates wear on mating surfaces and can compromise the integrity of the assembly it secures.

Part Details

Compatibility & Fitment

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.