Multiquip 2623 Screw HHC 5/16-18x1-1/4

The Multiquip 2623 is a genuine OEM Screw HHC 5/16-18x1-1/4 designed for a wide range of Whiteman ride-on power trowels and related equipment. As a direct Multiquip OEM part, it is manufactured to the exact specifications required for proper assembly and reliable mechanical fastening across compatible machines. Confirmed fitment includes the STX55Y6, STX55J6, STXD6i, HTX44Y4, HTX44Y5, HTX44K4, HTX44K5, HTXD6i, HTXG6DF, JWN24HTCSL, HHXD5, HHXD5-ES, HHXG5, EHHNK5, and HHXDF4-DF5, as well as select light tower and masonry saw models. Sourced directly from Multiquip, part number 2623 ensures you are installing the correct fastener the first time without guesswork.

Key Features

• Genuine OEM Fastener Specification — Manufactured to Multiquip's exact thread pitch, head size, and tensile requirements for the 5/16-18x1-1/4 hex head cap screw specification.
• Drop-In Replacement — Matches the original fastener location and engagement depth, so it threads directly into existing hardware without modification to mating components.
• Broad Ride-On Trowel Coverage — Compatible with STX55, HTX44, JWN24, HHX, and HTXG series ride-on power trowels, covering both hydrostatic and mechanical trowel families.
• Structural Integrity Where It Counts — A correctly torqued OEM-spec fastener maintains frame, guard, and component joint integrity; a worn, stripped, or incorrect screw can allow critical assemblies to shift or loosen under vibration.
• Multi-Equipment Fitment — Also confirmed for select LT6K light tower and MP/SP series masonry and flat saw models, making it a useful stock item for mixed Multiquip fleets.

A hex head cap screw is a structural threaded fastener used to clamp two or more components together at a fixed, torqued connection. On ride-on power trowels and related equipment, fasteners like the 5/16-18x1-1/4 HHC screw appear throughout the frame, guard, and accessory mounting points where vibration and dynamic loads are present during operation. When a fastener is missing, cross-threaded, or substituted with an incorrect size, joint clamp load is compromised, which can cause components to work loose over time. Replacing worn or damaged hardware with the correct OEM-spec part restores the designed clamping force and keeps assemblies secure through normal operating cycles.

For fitment questions or to confirm this part is correct for your specific serial number, contact the DHS Equipment parts team before ordering.

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.