Multiquip 90201878003 Special 14 MM Nut

The Multiquip 90201878003 is a genuine OEM Special 14 MM Nut designed for a wide range of Multiquip, Whiteman, Essick, and STOW equipment across multiple product families. As a direct OEM replacement, this nut is manufactured to the exact material and dimensional specifications required by Multiquip, ensuring a secure, properly torqued connection wherever it is installed. Verified fitment spans plate compactors including MVC and MVH series, concrete and mortar mixers including MC, WC, WM, EM, and CMS models, centrifugal and trash pumps in the QP series, concrete saws in the FCG1 family, masonry saws including MP and MS series, walk-behind trowels, diaphragm pumps, and select generators and welders. With part number 90201878003 covering this breadth of equipment, it is one of the most versatile fastener components in the Multiquip parts catalog.

Key Features

• Genuine OEM Material Spec — Manufactured to Multiquip's specified grade and thread tolerance for the 14 MM fastener standard, ensuring proper clamping load and thread engagement across all listed applications.
• Drop-In Installation — Threaded to OEM dimensions, this nut seats and torques correctly without reworking mating hardware or fastener locations.
• Broad Cross-Family Fitment — A single part number covers plate compactors (MVC, MVH), concrete and mortar mixers (MC, WC, WM, EM, CMS), QP centrifugal and trash pumps, FCG1 concrete saws, MP and MS masonry saws, walk-behind trowels, diaphragm pumps, generators, and welders.
• Fastener Integrity Under Load — A correctly spec'd nut maintains critical joint clamping force during vibration-heavy operation — preventing loosening that can lead to component misalignment or structural failure on compactors, mixers, and pumps.
• Fuel and Fluid System Safety — Where used in pump and fuel system assemblies, the correct thread specification and material grade prevent joint leakage, making fastener accuracy a genuine safety consideration.

A special nut of this type serves as a precision fastener at critical joint locations throughout the machine — securing covers, brackets, housings, and mechanical assemblies that must remain tightly clamped during continuous vibration or load cycling. Unlike standard hardware-store fasteners, an OEM-spec nut is manufactured to the exact thread pitch, across-flat dimension, and material hardness specified for the application, ensuring it develops the correct clamping force when torqued to spec. When a fastener of this type loosens, stretches, or is replaced with an incorrect grade, it can allow components to shift, vibrate loose, or fail prematurely — making correct replacement critical to keeping the machine operating safely and reliably.

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.