The Multiquip 3053858 is a genuine OEM Hex Screw 3/8" x 5/8" 16UNF designed for MQ-D305 and D306 diaphragm pump equipment. Sourced directly from Multiquip, this fastener meets the original thread specification and dimensional tolerances required for proper assembly. It is a direct replacement for the original hardware used on these diaphragm pump models, ensuring a correct and secure fit without modification. Keep this part on hand to maintain pump integrity during service or rebuild work.
Key Features
- Genuine OEM Thread Accuracy — Manufactured to the exact 16UNF thread specification, ensuring correct engagement and torque retention in diaphragm pump housings.
- Direct Hardware Replacement — Matches the original 3/8" x 5/8" hex screw used in assembly, dropping in without rework or thread modification.
- Confirmed Fitment — Verified for use on Multiquip MQ-D305 and D306 diaphragm pumps; check your model before ordering.
- Structural Integrity Under Pressure — Proper fastener spec keeps pump components clamped and aligned during operation, preventing leaks caused by loose or mismatched hardware.
- Critical for Pump Rebuild and Service Work — Replacing worn or damaged fasteners with OEM hardware restores the clamping force required across diaphragm sealing surfaces.
A hex screw in a diaphragm pump assembly is responsible for clamping critical components together — including pump housings, valve plates, and diaphragm covers — under the mechanical stress of continuous pumping cycles. An incorrect or damaged fastener can result in insufficient clamping force, leading to fluid leaks or diaphragm misalignment. Using the correct OEM-specified fastener, such as the Multiquip 3053858 with its 16UNF thread form, ensures proper torque load is maintained throughout the service life of the pump.
Part Details
| Part Number | 3053858 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Hex Screw 3/8" x 5/8" 16UNF |
Compatibility & Fitment
| Name | Model |
|---|---|
| MQ Diaphragm Pumps | MQ-D305 |
| MQ Diaphragm Pumps | D306 |
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.
