Multiquip 50358000 Grub Screw M8x10

The Multiquip 50358000 is a genuine OEM Grub Screw M8x10 designed for the QP3TZ and QP2TZ series trash pumps. As a direct OEM replacement, this fastener meets the exact thread pitch, hardness grade, and dimensional spec required by Multiquip for these units. Sourced through authorized distribution at DHS Equipment, the 50358000 ensures a correct installation without guesswork on sizing or engagement depth. If you're servicing a QP3TZ or QP2TZ pump, using the OEM-specified grub screw keeps the assembly secure and operating as intended.

Key Features

• Exact OEM Thread Specification — M8x10 sizing matches the original factory fastener exactly, ensuring correct thread engagement with no risk of cross-threading or under-seating.
• Genuine Multiquip OEM Component — Sourced directly from Multiquip, this grub screw is manufactured to the same hardness and material grade as the original, critical for maintaining clamping force in pump applications.
• Confirmed Fitment for QP3TZ and QP2TZ — Verified for Multiquip QP3TZ and QP2TZ trash pump models, so you can order with confidence.
• Maintains Assembly Integrity — A properly torqued grub screw locks rotating or sliding components in place; a worn or missing one allows unwanted movement that leads to accelerated wear or component failure.
• Drop-In Installation — Standard M8x10 headless set screw format installs with a common hex key, fitting directly into the existing threaded bore on the pump assembly.

A grub screw — also known as a set screw — is a fully threaded, headless fastener used to secure a component, such as an impeller, shaft collar, or handle fitting, against or onto a mating surface or shaft. In trash pump applications, grub screws are commonly used to lock rotating assemblies in position and prevent axial or rotational slippage under load. When a grub screw becomes stripped, loosened, or corroded, the component it secures can shift during operation, causing vibration, misalignment, or damage to surrounding parts. Replacing it with the correct OEM-spec fastener — the right diameter, thread pitch, and length — restores a firm, reliable hold.

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.