Multiquip 10057 3/8" x 2" Steel Key

The Multiquip 10057 is a genuine OEM 3/8" x 2" Steel Key designed for a wide range of Multiquip and Whiteman equipment including MQ600H-series trash pumps, WM45 and WM63-series mortar mixers, and MP-series masonry saws. As a direct OEM replacement, part 10057 meets the original engineering specifications for shaft-to-hub keyed connections across all compatible models. Sourced directly through Multiquip's authorized parts network, this component ensures correct fitment on equipment ranging from the MQ600HTP and MQ600HTB to the WM63H5, WM63H8, and WM63E mixers. If you're servicing a WM45H, WM45HE, or WM45HCE mixer, or any MP-series masonry saw including the MP1H, MP2H, MP25E1, MP25E3, MP275E3, MP115E, MP120E, MP1455HP, MP2050E1, MP2050E3, or MP2090HP, this is the correct key to restore proper shaft alignment and torque transfer.

Key Features

• Genuine OEM Construction — Manufactured to Multiquip's original material and dimensional spec for a steel drive key, ensuring correct hardness and shear strength for shaft-to-hub keyed connections.
• Standard 3/8" x 2" Profile — The precise rectangular profile seats fully into matching keyways on both shaft and hub, restoring positive rotational engagement without slop or play.
• Broad Cross-Equipment Compatibility — A single part number covers MQ600H-series trash pumps, WM45 and WM63 mortar mixers, and the full MP masonry saw lineup, making it a smart stocking item for mixed fleets.
• Restores Full Power Transfer — A worn or sheared key allows the hub to slip on the shaft, causing loss of drive to pumps, mixer drums, or saw blades; replacing with 10057 immediately restores positive torque transmission.
• Direct Drop-In Service Part — Dimensionally identical to the original, the 10057 installs into existing keyways on all listed models with no recutting or filing required.

A steel drive key is a small rectangular component that sits in matched slots — called keyways — cut into both a rotating shaft and the hub of the component it drives, such as a pump impeller, mixer drum gear, or saw arbor. Its job is to lock the two together rotationally so that torque from the engine transfers directly to the driven component without slippage. When a key shears or wears down, the shaft spins independently of the hub, rendering the driven assembly completely inoperative even though the engine continues to run. Replacing a failed key with the correct OEM part — in this case the Multiquip 10057 — is one of the most straightforward repairs on a powered shaft assembly and immediately returns the machine to full working order.

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.