Multiquip 42344 Nyloc Nut M8-1.25 Class 8.8

The Multiquip 42344 Nyloc Nut M8-1.25 Class 8.8 is a genuine OEM fastener designed for Whiteman and Multiquip ride-on power trowel models including the HTX, STX, LD, LD60, and PRX series. Sourced directly from Multiquip, this nylon-insert locking nut meets the exact grade and thread specification required for these machines. It is a direct OEM replacement for any application on these trowels calling for an M8-1.25 Class 8.8 nyloc nut. DHS Equipment stocks this part to help you get your trowel back in service with confidence.

Key Features

• Class 8.8 Rated Fastener — Medium-high tensile strength rating ensures the nut holds up under the vibration loads and mechanical stress typical of ride-on power trowel operation.
• Nylon-Insert Locking Design — The integrated nylon collar grips the bolt thread to resist loosening from vibration without the need for thread-locking compounds.
• Correct M8-1.25 Thread Specification — Machined to M8 diameter with a 1.25 mm pitch, matching OEM thread dimensions for a clean, secure installation on compatible fastener points.
• Genuine OEM Part — Produced to Multiquip's original specifications, so you know you are installing the correct nut — not a generic substitute with an unknown grade or tolerance.
• Wide Trowel Series Coverage — Confirmed fitment across the HTXG6DF, HTX6H, STX6H, STXDF, LD6, LD6SL, LD60, and PRX ride-on trowel models, making it a versatile stock item for multi-unit fleets.

A nyloc nut is a standard locking fastener that uses a nylon insert embedded in the top of the nut to create friction against the bolt thread, preventing the nut from backing off under vibration or cyclical loading. On ride-on power trowels, where engine vibration and blade torque are constant during operation, fastener integrity is critical — a nut that works loose can lead to component misalignment, accelerated wear, or mechanical failure at the attachment point. Replacing worn or missing nyloc nuts with the correct grade and thread specification, such as the Multiquip 42344, ensures each fastened joint maintains its clamping force throughout the service interval.

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.