The Multiquip 500169 Square Key 3/16 In x 50 MM is a genuine OEM replacement designed for Multiquip and Whiteman concrete and mortar mixers — including MC94P/S, MC64P/S, WM63H8, WM63H5, and WM63E models — as well as V305EK and V305EH walk-behind vibratory rollers. As a genuine OEM component, 500169 is manufactured to the original design specification, ensuring a correct, interference-free fit in the keyway without rework or adjustment. Stocking this small but critical fastener means avoiding unplanned downtime when a key shears during heavy mixing or compaction cycles.
Key Features
- Genuine OEM Specification — Manufactured to the original dimensional tolerance for consistent keyway engagement and positive torque transfer without slippage.
- Direct Drop-In Replacement — Matches the 3/16 In x 50 MM profile of the original key, seating flush in the keyway for a clean, secure installation.
- Broad Fitment Across Two Equipment Families — Confirmed for MC94P/S and MC64P/S concrete mixers, WM63H8, WM63H5, and WM63E Whiteman mortar mixers, and V305EK and V305EH vibratory rollers.
- Torque Transfer Integrity — A correctly installed square key locks the shaft and hub in rotational alignment; a worn or sheared key causes slipping, vibration, and accelerated drive component wear.
- Smart Service Stock Item — Square keys are a high-wear consumable in rotating drive assemblies; keeping 500169 on hand means fast turnaround on routine maintenance without waiting on parts orders.
A square key is a precisely dimensioned drive component that sits in matching keyways cut into a shaft and its mating hub or gear, locking both parts together so they rotate as a single unit. When the key is intact, torque is transferred smoothly from the power source to the driven component — such as a mixer drum or roller drum — without slip. When a key shears or rounds out from overload or wear, the hub spins freely on the shaft, the driven component stops turning, and continued operation accelerates damage to both the shaft and hub bores. Replacing a worn key promptly with the correct OEM part restores full drive engagement and protects the surrounding components from secondary damage.
For fitment questions or to confirm compatibility with your specific serial number, contact the DHS Equipment parts team directly.
Part Details
| Part Number | 500169 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Square Key 3/16 In x 50 MM |
Compatibility & Fitment
| Name | Model |
|---|---|
| MQ Mixers | MC94P/S |
| MQ Mixers | MC64P/S |
| Whiteman Mixers | WM63H8 |
| Whiteman Mixers | WM63H5 |
| Whiteman Mixers | WM63E |
| Rollers | V305EK |
| Rollers | V305EH |
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.
