The Multiquip EM509341 is a genuine OEM Allen Bolt 3/8"-16 x 5" designed for the ST-45HRM concrete pump. As a factory-sourced fastener, EM509341 is manufactured to the exact thread pitch, length, and head dimensions specified for this application, ensuring a secure, properly torqued connection without guesswork. This bolt is confirmed to fit the ST-45HRM swing-tube concrete pump, making it a dependable service part for routine maintenance or repair work.
Key Features
- Genuine OEM Fastener Grade — Sourced directly from Multiquip, this Allen bolt meets the exact tensile strength and thread specification required for the ST-45HRM application, so critical connections stay tight under load.
- Correct Thread and Length — The 3/8"-16 coarse thread and 5" length match the original hardware specification exactly, seating flush and engaging full thread depth without shimming or modification.
- Confirmed ST-45HRM Fitment — Engineered specifically for the ST-45HRM swing-tube concrete pump, eliminating compatibility uncertainty when ordering a replacement fastener.
- Structural Integrity at High-Vibration Points — Concrete pumps subject fasteners to constant vibration and hydraulic stress; using the correct OEM bolt maintains clamping force and prevents premature loosening at critical joints.
- Direct Service Replacement — Drops into the existing bolt position with standard hex-key tooling, making field or shop replacement straightforward during scheduled service or unplanned repair.
An Allen bolt — also known as a socket head cap screw — uses an internal hex drive to allow high torque application in confined spaces where a standard wrench cannot reach. On the ST-45HRM concrete pump, fasteners like the EM509341 secure structural components, housings, and wear-part assemblies that must remain firmly clamped during pumping cycles. A stretched, stripped, or incorrect-length bolt at these points can lead to joint movement, leakage, or component damage, making replacement with the correct OEM hardware essential to keeping the pump operating safely and at rated output.
Part Details
| Part Number | EM509341 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Allen Bolt 3/8"-16 x 5" |
Compatibility & Fitment
| Name | Model |
|---|---|
| Submersible Pumps | ST-45HRM |
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.
