Multiquip 0040008000 Lock Washer

The Multiquip 0040008000 is a genuine OEM Lock Washer designed for a wide range of Multiquip welder and generator equipment, including DLW, DAW, GAW, GA, GAC, and DAC series models. As a genuine OEM component, this Lock Washer is manufactured to the same specifications as the original part installed at the factory, ensuring a correct and reliable fit across all compatible units. Compatible models include DLW500ESA4, DLW400ESA4, DLW330X2, DAW500SA4, GAW135H, GA2.5HR, GA6HR, GA9.7HE, GAC9.7HEA, DAC7000SS, and many additional models within these families. Sourced directly through authorized Multiquip supply channels, the 0040008000 is the part number to specify when you need confidence in fit and function.

Key Features

• Genuine OEM Construction — Manufactured to original equipment specification, ensuring correct locking tension and material grade for fastener retention in welder and generator assemblies.
• Direct Hardware Replacement — Drops into the same fastener position as the original, with no reworking of mounting hardware or surrounding components required.
• Broad Series Compatibility — Fits DLW, DAW, GAW, GA, GAC, and DAC series welders and generators, covering a wide cross-section of the Multiquip portable power equipment lineup.
• Fastener Security Under Load — A functioning lock washer prevents fastener backing-off due to vibration — critical in engine-driven equipment where constant mechanical vibration is a factor.
• Electrical and Structural Safety Relevance — In generator and welder applications, loose fasteners caused by washer failure can compromise grounding connections and structural integrity, making correct washer replacement a safety-relevant service item.

A lock washer is a hardened fastening component placed beneath a nut or bolt head to resist loosening caused by vibration and dynamic loads. In engine-driven equipment such as portable generators and welders, constant mechanical vibration creates conditions where standard fasteners can gradually back off over time — a lock washer applies spring tension or bite to the mating surfaces to hold the fastener in place. When a lock washer is missing, deformed, or fatigued, fasteners in critical locations can work loose, potentially affecting structural connections, electrical grounding points, or engine ancillary mounts. Replacing worn or damaged lock washers with genuine OEM parts like the Multiquip 0040008000 is a straightforward but important part of any thorough service or repair procedure.

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.