The Multiquip 1766 is a genuine OEM Flange Bolt 1/2"-13 x 3/4" designed for MQD3HA, MQD2HA, MQD3H, and MQD2H diaphragm pumps. Sourced directly from Multiquip, this bolt meets the exact specifications required for proper assembly and secure clamping on these pump models. Using the correct OEM fastener ensures structural integrity at critical connection points where torque and thread engagement are essential. DHS Equipment stocks this part so you can get your pump back in service without delay.
Key Features
- Genuine OEM Fastener Grade — Manufactured to Multiquip's exact thread class and shank dimensions for the 1/2"-13 x 3/4" specification, ensuring correct clamp load at bolted joints.
- Direct-Replacement Fit — Threads engage immediately into existing pump housing receivers on compatible models with no chasing or rework required.
- Broad Diaphragm Pump Compatibility — Fits MQD3HA, MQD2HA, MQD3H, and MQD2H Multiquip diaphragm pump models.
- Structural Integrity at Pump Joints — Flange-style head distributes clamping force evenly across mating surfaces, preventing joint movement and fluid path separation under operating pressure.
- Corrosion and Fatigue Resistance — Built to withstand the vibration and exposure conditions common to pump applications, maintaining secure fastening over extended service intervals.
A flange bolt combines a standard hex bolt with an integrated washer-like flange beneath the head, distributing clamping load across a wider surface area than a conventional bolt. On diaphragm pumps, these bolts are used at housing joints and cover assemblies where maintaining a consistent, leak-free seal is critical to pump performance. A loose, stripped, or incorrect fastener at these points can allow the pump housing to shift, compromising the diaphragm seal and causing fluid bypass or outright pump failure.
Part Details
| Part Number | 1766 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Flange Bolt 1/2"-13 x 3/4" |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diaphragm Pumps | MQD3HA |
| Diaphragm Pumps | MQD2HA |
| Diaphragm Pumps | MQD3H |
| Diaphragm Pumps | MQD2H |
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.
