The Multiquip 176900000 is a genuine OEM Hex Head Bolt 5/8-11 x 4 designed for MQD2HA and MQD3HA diaphragm pump equipment. As a direct OEM replacement, this fastener matches the exact thread pitch, grip length, and head dimensions specified for these pumps — so installation is straightforward and torque values are consistent with the original build. Sourced directly through Multiquip's authorized parts program, 176900000 is the correct fastener to specify when servicing MQD2HA or MQD3HA units in the field or shop.
Key Features
- OEM-Grade Fastener Integrity — Manufactured to the exact thread class and tensile specification Multiquip requires for structural and fluid-end bolting on diaphragm pump assemblies.
- Correct Thread Form and Length — 5/8-11 coarse thread, 4-inch grip length matches the original bolt pattern, allowing proper clamp load and seating without shimming or modification.
- Confirmed Fitment — Verified for MQD2HA and MQD3HA diaphragm pump models; use part number 176900000 when ordering to ensure the right fastener every time.
- Clamp Load Consistency — Correct bolt dimensions maintain designed clamping force across mating surfaces, protecting gaskets and pump body interfaces from leakage or premature wear.
- Pressure-Side Safety — On diaphragm pumps handling slurry or fluid under pressure, using the specified OEM bolt grade helps ensure that bolted joints remain secure under operating loads and vibration.
A hex head bolt in a diaphragm pump application does more than hold components together — it establishes the clamp load that keeps mating surfaces sealed against fluid pressure and vibration. On MQD-series diaphragm pumps, bolts at the fluid end and valve covers must maintain consistent tension to prevent leaks and protect the diaphragm assembly. Using an undersized, incorrect-grade, or wrong-length fastener can compromise the seal, allow joint movement under cyclic pump loads, and ultimately shorten the service life of surrounding components.
Need help confirming fitment? Contact DHS Equipment with your model number and our team will verify that 176900000 is the right bolt for your application.
Part Details
| Part Number | 176900000 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Hex Head Bolt 5/8-11 x 4 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diaphragm Pumps | MQD2HA |
| Diaphragm Pumps | MQD3HA |
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.
