Multiquip 0042312000 Lock Washer

The Multiquip 0042312000 is a genuine OEM Lock Washer designed for the DCA series ultra-silent and diesel-powered generator lineup. This fastening component is a direct OEM replacement sourced to exact Multiquip specifications, covering an extensive range of DCA generator models including the DCA125SSIU4F, DCA300SSJU4F3, DCA400SSK, DCA800SSK2, DCA600SSV, DCA1100SSC, and many additional DCA series variants. Keeping genuine OEM hardware in your generator ensures every fastened joint holds to the torque and retention values the machine was engineered around. DHS Equipment supplies this part ready to ship so your generator stays on schedule.

Key Features

• Genuine OEM Construction — Manufactured to Multiquip's exact material and dimensional specifications, ensuring the locking teeth engage and retain fastener torque the way the original design requires.
• Direct Hardware Match — Replaces the original Lock Washer position-for-position with no reworking of the mating fastener or mounting surface required.
• Broad DCA Generator Fitment — Compatible across a wide range of Multiquip DCA ultra-silent and diesel-powered generator models, including the DCA70SSIU4F, DCA220SSJU4F3, DCA400SSK, DCA600SSV4F3B, and DCA800SSK2 series.
• Fastener Retention Under Vibration — Lock washers are especially critical on generator frames and enclosures where continuous engine vibration works conventional fasteners loose; a worn or missing washer leads to loosened assemblies and potential component damage.
• Correct Hardware for Critical Joints — Using the correct OEM-spec hardware on electrical enclosures and structural fastening points supports proper grounding continuity and structural integrity of the generator assembly.

A lock washer is a thin hardened fastening component placed beneath a nut or bolt head to resist loosening caused by vibration, thermal cycling, and mechanical load. On generator sets like the Multiquip DCA series, which run for extended periods under continuous vibration from the engine and alternator, lock washers play an essential role in keeping enclosure panels, internal mounting brackets, and electrical connection points securely fastened. When a lock washer is missing, deformed, or substituted with an incorrect size, the fastener it supports can back out over time, leading to loose assemblies, rattling components, or compromised electrical connections that affect generator output and safety.

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.