The Multiquip 151700100 is a genuine OEM Square Key 3/16" x 1-1/2" designed for MQD2H, MQD2HA, MQD3H, and MQD3HA diaphragm pumps. As a factory-sourced component, it meets the exact dimensional and material standards set by Multiquip for these machines. Sourced directly through authorized channels, this key delivers the precise fit needed to keep your pump drivetrain properly engaged. Confirm your model code against the fitment list before ordering to ensure compatibility.
Key Features
- Genuine OEM Dimensional Accuracy — Machined to exact 3/16" x 1-1/2" tolerances, ensuring correct seating in the keyway without slop or misalignment.
- Direct Drivetrain Engagement — Drops into the shaft and hub keyway as a direct replacement, restoring positive torque transfer between the shaft and driven component.
- Broad Diaphragm Pump Fitment — Compatible with MQD2H, MQD2HA, MQD3H, and MQD3HA Multiquip diaphragm pump models.
- Protects Shaft and Hub Integrity — A correctly sized key prevents rotational slippage that would otherwise score or damage the shaft and hub keyway surfaces.
- Simple Service Part — A small component with an outsized role in drivetrain reliability; keeping a spare on hand means fast turnaround on pump servicing.
A square key is a small but critical drivetrain component that locks a rotating shaft to a hub, pulley, or impeller so that torque is transmitted reliably between them. It sits in a machined slot called a keyway that runs along both the shaft and the mating component, preventing them from spinning independently under load. When a key shears, wears, or goes missing, the driven component can slip or spin freely on the shaft — causing loss of pump output and potential damage to the shaft and hub keyway surfaces over time.
Part Details
| Part Number | 151700100 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Square Key 3/16" x 1-1/2" |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diaphragm Pumps | MQD2HA |
| Diaphragm Pumps | MQD3HA |
| Diaphragm Pumps | MQD2H |
| Diaphragm Pumps | MQD3H |
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.
