The Multiquip EM509402 Nut is a genuine OEM replacement designed for ST-45HRM and ST-70 submersible pumps. As a factory-sourced component, it matches the original specifications of the hardware used during manufacture, ensuring a correct and secure fit without guesswork. This nut is stocked by DHS Equipment for straightforward ordering and accurate parts replacement. Confirm your model code against ST-45HRM and ST-70 before ordering to ensure compatibility.
Key Features
- Genuine OEM Hardware Grade — Sourced directly from Multiquip, this nut meets the same material and thread specification as the original fastener installed at the factory.
- Direct Drop-In Replacement — Engineered to the same thread pitch, diameter, and seating profile as the original, so it installs exactly as the factory hardware did.
- Confirmed Fitment — Compatible with Multiquip ST-45HRM and ST-70 submersible pump models.
- Structural Integrity Under Load — A correctly torqued fastener keeps critical pump assemblies secure during operation; a worn or damaged nut can lead to loosening, leaks, or component misalignment.
- Corrosion-Resistant Application — Used in a submersible pump environment where hardware is routinely exposed to water and debris, making OEM-spec material quality especially important.
A nut may be a small component, but in a submersible pump assembly it plays a critical role in holding together key internal and external assemblies under continuous vibration and water exposure. When a fastener becomes corroded, stripped, or lost during service, replacing it with the correct OEM-spec hardware ensures the joint maintains proper clamping force. Using an incorrect fastener risks thread damage, housing misalignment, or seal failure — all of which can take a pump out of service.
For fitment questions or help confirming this part works with your specific unit, contact the DHS Equipment team directly.
Part Details
| Part Number | EM509402 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Nut |
Compatibility & Fitment
| Name | Model |
|---|---|
| Submersible Pumps | ST-45HRM |
| Submersible Pumps | ST-70 |
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.
