The Multiquip 306A0100310225 is a genuine OEM 5/16-18 X 2-1/4 Hex Screw HN LW designed for MQ Diaphragm Pump equipment. Sourced directly from Multiquip, this fastener matches the exact thread pitch, length, and head specification called out in the original assembly. Confirmed for MQ Diaphragm Pump models, it installs without alteration and holds to the torque values specified in the service documentation.
Key Features
- Correct Thread and Grade Match — 5/16-18 thread pitch and 2-1/4 inch length meet the original fastener specification, maintaining proper clamp load at the joint.
- Hex Head with HN and LW Hardware — Supplied with the correct hex nut and lock washer pairing, so the full fastener assembly goes in as a complete, properly torqued unit.
- Genuine OEM Sourcing — Manufactured to Multiquip's original design requirements, ensuring the correct material grade and dimensional tolerances for the application.
- Direct Fitment for MQ Diaphragm Pumps — Verified for MQ Diaphragm Pump equipment, eliminating guesswork when sourcing hardware during service or rebuild work.
- Structural Integrity at the Connection Point — A fastener of the wrong length or thread class can cause joint failure, housing damage, or fluid leaks; using the correct OEM screw maintains the integrity of the pump assembly.
A hex screw of this type is a structural fastener used to clamp housing panels, brackets, or cover assemblies together on diaphragm pump equipment. The hex nut and lock washer combination resists loosening under the vibration loads typical of pump operation. When a fastener stretches, strips, or is replaced with an incorrect grade or length, it can compromise the sealed integrity of the housing or allow critical components to shift under load, leading to leaks or accelerated wear at the joint.
Part Details
| Part Number | 306A0100310225 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | 5/16-18 X 2-1/4 Hex Screw HN LW |
Compatibility & Fitment
| Name | Model |
|---|---|
| MQ Diaphragm Pumps | MQ-D306HA |
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.
