The Multiquip 178200100 is a genuine OEM Hex Nut 1/2"-13 designed for MQD2H and MQD3H diaphragm pumps. As a direct Multiquip OEM part, it is manufactured to the exact dimensions and thread specification required for proper fastening and secure assembly on these machines. Confirm your model number before ordering — this nut is verified for the MQD2H and MQD3H diaphragm pump series sold and serviced by DHS Equipment.
Key Features
- OEM Thread Accuracy — Cut to the exact 1/2"-13 thread pitch and hex dimension specified by Multiquip, ensuring full thread engagement without cross-threading or stripping.
- Drop-In Replacement — Matches the original fastener profile, seating correctly against mating components without rework or modification to the surrounding hardware.
- Verified Fitment — Confirmed for Multiquip MQD2H and MQD3H diaphragm pump models, so you can order with confidence.
- Structural Integrity Under Load — A correctly torqued hex nut keeps critical assemblies clamped and sealed; a worn, damaged, or incorrect-size nut can allow loosening under pump vibration and lead to leaks or component separation.
- Genuine Multiquip OEM Part — Sourced directly from Multiquip, this fastener meets the same material grade and dimensional tolerance as the nut originally installed at the factory.
A hex nut is a threaded fastener used to clamp and secure components together when paired with a bolt or threaded stud. On a diaphragm pump, fasteners like the 1/2"-13 hex nut play a critical role in holding fluid-end components, housings, and structural brackets in position under continuous vibration and pressure cycling. When a hex nut is damaged, stripped, or loses proper torque, it can allow critical joints to work loose, compromising pump performance, causing fluid leaks, or creating unsafe operating conditions. Using the correct OEM-specified fastener ensures the joint is torqued to the right clamp load and stays secure through the pump's normal service life.
For fitment questions or to verify this part is correct for your specific unit, contact the DHS Equipment parts team before placing your order.
Part Details
| Part Number | 178200100 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Hex Nut 1/2"-13 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diaphragm Pumps | MQD2H |
| Diaphragm Pumps | MQD3H |
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.
