Multiquip 1875 Internal Shake-Proof Washer 3/8

The Multiquip 1875 Internal Shake-Proof Washer 3/8 is a genuine OEM component designed for a wide range of Multiquip and Whiteman power trowel models, including the MD80, MD105, STX55, HTX44, LD6, LD60, HTX6H, STX6H, and HDA-Series, among others. As a genuine OEM part, the 1875 is manufactured to the same specifications as the original hardware, ensuring a correct, secure fit in the fastener assemblies where it is used. This washer is also compatible with select Essick mixer models, making it a versatile hardware component across the Multiquip equipment portfolio. Order the Multiquip 1875 from DHS Equipment with confidence in fitment accuracy.

Key Features

• Genuine OEM Hardware Grade — Manufactured to the original internal tooth specification, delivering the correct locking force and bite profile expected of OEM fastener hardware.
• Internal Tooth Locking Design — The shake-proof internal tooth configuration grips the fastener head and mating surface simultaneously, resisting loosening under vibration and operational load.
• Drop-In Replacement — Sized to 3/8 inch to match the original installation, fitting directly onto the existing bolt or screw without modification to surrounding components.
• Broad Trowel Family Coverage — Fits MD, STX, HTX, LD, HDA-Series, and multiple walk-behind and ride-on Whiteman power trowel models, as well as select Essick mixer units.
• Vibration Resistance Where It Counts — Power trowels and mixers generate continuous vibration during operation; a worn or missing lock washer allows fasteners to back out, causing misalignment and potential mechanical failure.

An internal shake-proof washer is a hardened locking fastener component with inward-facing teeth that bite into the underside of a bolt head or nut and the surface of the workpiece when tightened. This tooth engagement creates resistance against rotation caused by vibration or dynamic loading, keeping critical fasteners securely torqued during machine operation. When a lock washer is missing, damaged, or compressed flat from reuse, fasteners can gradually loosen, leading to component movement, accelerated wear, and potential structural failure in the assembly.

For fitment questions or parts support, contact the DHS Equipment team directly.

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.