Multiquip 20476 HHC Screw 1/4-28 x 3/8

The Multiquip 20476 is a genuine OEM HHC Screw 1/4-28 x 3/8 designed for a wide range of Multiquip and Whiteman walk-behind and ride-on power trowels, including BH11C, BH90C, BS90C, HHNG4, HHNG5, HHXG5, JA Series, J36 Series, BA Series, and many more. As a direct OEM replacement, this screw is manufactured to the exact thread specification and dimensional tolerances required by Multiquip for correct assembly and secure fastening. Sourced directly through authorized channels, part number 20476 ensures you are installing a component that meets the original build standard for your machine. DHS Equipment stocks this part to help keep your trowel equipment running without unnecessary delays.

Key Features

• Exact Thread Specification: — Cut to 1/4-28 UNF thread pitch and 3/8-inch length, matching the original fastener spec for correct torque and seating in trowel assemblies.
• Genuine OEM Quality: — Manufactured to Multiquip's original material and hardness requirements, ensuring the screw holds under the operational vibration loads common to power trowel equipment.
• Broad Trowel Compatibility: — Fits an extensive range of Multiquip and Whiteman walk-behind models (J36, JA Series, BA Series, BH11C, BH90C, CA Series, and more) as well as ride-on trowel models including HHNG4, HHNG5, HHXG5, and HHXDF Series.
• Drop-In Replacement: — Installs directly in place of the original fastener with no reworking of threads or mounting hardware required.
• Prevents Loose Component Failures: — A worn, stripped, or incorrect fastener can allow guards, housings, or assemblies to shift under load; using the correct OEM screw maintains structural integrity of critical trowel components.

The HHC Screw 1/4-28 x 3/8 is a hex head cap screw used to secure components and subassemblies on Multiquip and Whiteman power trowels. The 1/4-28 designation refers to a fine-thread UNF profile, which provides stronger clamping force and greater resistance to loosening from vibration compared to coarse-thread equivalents — an important characteristic on equipment that operates under continuous rotational and vibrational loads. When a fastener of this type is missing, stripped, or substituted with an incorrect thread pitch or length, it can result in improperly secured housings or guards, accelerated wear on mating components, and potential operational hazards. Using the correct OEM replacement screw ensures the assembly is restored to its original specification.

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.