The Multiquip 171100100 is a genuine OEM Set Screw 1/4-20 x 1/4 designed for MQD2HA and MQD3HA diaphragm pumps. As an authorized Multiquip parts source, DHS Equipment supplies this fastener direct from the manufacturer to ensure exact thread specification and dimensional accuracy. This set screw is a critical retention fastener used throughout the pump assembly, and using the correct OEM specification keeps critical components locked in position under operating conditions. Confirm your pump model against MQD2HA and MQD3HA fitment before ordering.
Key Features
- OEM Thread Specification: — Produced to the exact 1/4-20 thread pitch and 1/4-inch length called out in the Multiquip parts specification, ensuring proper torque engagement and holding force.
- Drop-In Fastener Replacement: — Matches the original threaded bore geometry in the pump assembly for straightforward installation without rework or re-tapping.
- Confirmed Fitment: — Verified for MQD2HA and MQD3HA Multiquip diaphragm pump models.
- Secure Component Retention: — A correctly seated set screw prevents shaft or fitting movement that can cause misalignment, fluid loss, or accelerated wear on surrounding pump components.
- Genuine Multiquip OEM Part: — Sourced directly through the Multiquip OEM supply chain, carrying the correct part number 171100100 for confident identification during service and parts ordering.
A set screw is a headless fastener threaded fully into a bore to lock a component — such as a shaft collar, fitting, or drive element — against rotation or axial movement. In a diaphragm pump, set screws are used to secure key rotating and stationary assemblies, and a loose or incorrect fastener can allow critical parts to shift under the vibration and pressure cycles the pump generates during operation. When a set screw fails or backs out, the result is often accelerated wear on mating surfaces, loss of alignment, and eventual component damage that goes well beyond replacing the screw itself.
Part Details
| Part Number | 171100100 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Set Screw 1/4-20 x 1/4 |
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.
