The Multiquip 178202000 Nut 5/8"-18 is a genuine OEM fastener designed for MQD2D3H, MQD3H, and MQD2H diaphragm pumps. Sourced directly from Multiquip, this nut meets the exact thread specification required to maintain a secure, properly torqued connection within the pump assembly. Confirm your model code against the fitment list to ensure this is the correct replacement before ordering. DHS Equipment stocks genuine Multiquip OEM parts so you get the right component with confidence.
Key Features
- Correct Thread Specification — 5/8"-18 fine-thread profile matches the original fastener exactly, maintaining proper clamp load and joint integrity.
- Genuine OEM Construction — Manufactured to Multiquip's material and hardness standards for a fastener that holds torque under pump vibration and operating pressure.
- Direct-Fit Replacement — Installs in the same position as the original without modification, threading directly into the mating component as designed.
- Verified Fitment — Compatible with MQD2D3H, MQD3H, and MQD2H Multiquip diaphragm pumps.
- Sustained Pump Performance — A correctly torqued fastener keeps pump components seated and sealed, preventing loosening that can lead to leaks or premature component wear.
A fastener like the 178202000 Nut 5/8"-18 plays a critical role in holding pump components together under continuous vibration and fluid pressure. When a nut stretches, strips, or loses torque retention, it can allow connected components to shift or separate, causing leaks, misalignment, or accelerated wear on surrounding parts. Replacing a damaged or worn fastener with the correct OEM specification nut restores the mechanical integrity of the assembly and keeps the diaphragm pump operating as intended.
Part Details
| Part Number | 178202000 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Nut 5/8"-18 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diaphragm Pumps | MQD2D3H |
| 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.
