The Multiquip EC400037 Hex Nut 3/8" is a genuine OEM replacement hardware component designed for the STOW SDP-2 diaphragm pump. Sourced directly from Multiquip, this hex nut meets the exact specifications required for proper assembly and secure fastening on SDP-2 series equipment. Using the correct OEM hardware ensures consistent clamping force and thread engagement, keeping critical connections tight under the vibration and pressure demands of diaphragm pump operation.
Key Features
- Genuine OEM Hardware Grade — Manufactured to the exact material and thread specification required for the SDP-2, ensuring proper torque retention and resistance to loosening under pump vibration.
- Direct-Fit Replacement — Sized at 3/8" to match the original fastener position on the SDP-2, installing in place of the factory nut with no rework to surrounding components.
- Confirmed SDP-2 Compatibility — Verified fitment for the STOW SDP-2 diaphragm pump, so you can order with confidence that this is the correct part for your machine.
- Maintains Structural Integrity — A worn, stripped, or incorrect hex nut can allow connections to work loose during operation, leading to leaks or assembly failure; the part restores the joint to its original holding strength.
- OEM Traceability — As a genuine Multiquip part, EC400037 carries full OEM traceability, supporting proper maintenance records for your equipment.
A hex nut is a standard threaded fastener used to secure bolted connections throughout a pump assembly. On the SDP-2 diaphragm pump, correctly torqued fasteners are essential to maintaining sealed, pressure-tight joints and keeping structural components from shifting during operation. When a hex nut becomes stripped, corroded, or lost, replacing it with the correct OEM-specified hardware prevents joint failure, leaks, and premature wear on mating threads.
Part Details
| Part Number | EC400037 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Hex Nut 3/8" |
Compatibility & Fitment
| Name | Model |
|---|---|
| STOW Diaphragm Pumps | SDP-2 |
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.
