Multiquip 0040516000 Toothed Washer

The Multiquip 0040516000 is a genuine OEM Toothed Washer designed for the DCA Series Super-Silent and Diesel Powered Generator lineup, including DCA150SSJU, DCA180SSJU, DCA220SSJ, DCA300SSC, DCA600SSV, and MQP240 models. As a direct OEM component, it meets the exact specifications set during original manufacture, ensuring proper fastener tension and secure electrical bonding where required. Sourced directly from Multiquip, this washer is the correct service replacement to maintain the integrity of your generator assembly. Confirm your model code against the fitment list to ensure compatibility before ordering.

Key Features

• OEM Tooth Profile and Material Grade — Manufactured to the precise tooth geometry and hardness spec required for consistent bite and clamp retention in generator fastener applications.
• Drop-In Service Replacement — Matches the original washer dimensions exactly, seating correctly against mating fastener and surface without modification.
• Broad DCA Series Compatibility — Fits DCA150SSJU, DCA180SSJU, DCA220SSJ, DCA220SSJU, DCA300SSC, DCA300SSJU, DCA600SSV, MQP240, and related Super-Silent Generator variants.
• Maintains Fastener Clamp Load — The toothed design bites into mating surfaces to resist loosening under vibration, keeping critical generator connections secure during operation.
• Electrical Grounding Integrity — In grounding and bonding applications, the toothed contact points cut through surface oxidation to maintain a low-resistance ground path — a detail that matters on high-output diesel generator sets.

A toothed washer — also known as a serrated or star washer — is placed beneath a fastener head or nut to prevent loosening caused by vibration and dynamic loads. The raised teeth bite into both the fastener and the mounting surface, creating a mechanical lock that maintains clamp force over time. In generator assemblies, these washers are also used in grounding circuits where a reliable metal-to-metal electrical contact is required; a worn, missing, or incorrect washer can compromise both fastener security and ground continuity, leading to loose connections or electrical faults during operation.

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.