Multiquip 6109180 Lock Washer 1/2

The Multiquip 6109180 is a genuine OEM Lock Washer 1/2 designed for use across a wide range of Multiquip, Whiteman, Essick, and Mayco equipment. This fastener hardware component is a direct OEM replacement sourced to exact Multiquip specifications, covering compatible models across mixer, pump, power buggy, and roller product families. Verified fitment includes models such as WM45HCE, WM70, WM90, WM120, WBH-16, WBH-21, AR13H, AR13D, AR14H, V303E, V305EH, V305EK, R2000H, MQ600H, LS300, LS400, LS500, LS600, C30HDG, C30HDN, PRO12, and many more — always confirm your model code before ordering.

Key Features

• Genuine OEM Hardware Integrity — Manufactured to Multiquip's exact material and dimensional standards for a 1/2 locking fastener, ensuring correct tension retention under vibration and load.
• Drop-In Replacement — Matches the original 1/2 thread profile and lock geometry, allowing straightforward installation without reworking mounting surfaces or fastener seats.
• Broad Cross-Family Fitment — Compatible across Whiteman mixers (WM series), Essick mixers (EM series), Mayco and Multiquip concrete and trash pumps (LS, C30HD, MQ600 series), Whiteman power buggies (WBH series), and Multiquip rollers (AR, V, R2000H series).
• Vibration-Resistant Locking Action — The split-lock design bites into mating surfaces to resist loosening caused by continuous machine vibration, helping maintain proper clamp load over time.
• Critical Fastener Safety — On equipment that operates under sustained vibration — compaction, mixing, pumping, and transport — a failed or missing lock washer can allow bolted connections to back off, creating mechanical hazards. Using the correct OEM-spec washer supports safe, secure assembly.

A lock washer is a hardened split-ring fastener placed beneath a bolt or nut to prevent loosening caused by vibration, torque cycling, and mechanical movement. As the fastener is tightened, the washer's split ends dig into both the mating surface and the fastener face, creating resistance that holds clamping force even when equipment is running under continuous load. When a lock washer is worn flat, missing, or substituted with an incorrect size, bolted joints can gradually back off — leading to misalignment, component damage, or unsafe operating conditions on equipment such as concrete mixers, pumps, power buggies, and rollers.

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.