The Multiquip 511428 Allen Head Screw 1/2-13 x 3 is a genuine OEM fastener designed for Mayco hydraulic-driven concrete pump models including LS300P, LS600, LS600P, and LS60TD. As an authentic Multiquip OEM component, it meets the exact thread pitch, length, and grade specifications required for proper assembly and torque retention in concrete pump applications. Sourcing the correct OEM screw ensures secure fastening at critical joints where hardware failure could compromise pump performance or safety. DHS Equipment stocks this part to support fast, accurate servicing of your Mayco pump equipment.
Key Features
- Correct Thread Specification — 1/2-13 UNC thread pitch and 3-inch length match the OEM-specified fastener profile exactly, ensuring full thread engagement at the installation point.
- Genuine OEM Grade Hardware — Manufactured to Multiquip's material and tensile strength standards for high-stress pump assembly fastening, not a generic hardware-store substitute.
- Direct-Fit Installation — Drops into the existing bore without rethreading or modification, restoring the joint to its original assembled condition.
- Confirmed Fitment — Verified for Mayco concrete pump models LS300P, LS600, LS600P, and LS60TD.
- Maintains Clamping Integrity — A properly torqued Allen head cap screw holds pump components under operational load and vibration; worn or incorrect hardware can back out and cause assembly separation during pumping cycles.
- Critical Fastener Compliance — Using the specified OEM screw at structural or hydraulic attachment points supports the designed torque value and helps prevent joint failure under pump operating pressures.
An Allen head cap screw — also called a socket head cap screw — uses a recessed hex drive to allow high clamping torque in tight or recessed mounting locations. In hydraulic concrete pumps like the Mayco LS-series, these fasteners are commonly used to secure housings, wear plates, valve assemblies, and structural brackets where maintaining consistent clamping force under vibration and pressure is essential. When a fastener of the wrong grade, thread pitch, or length is substituted, it can strip threads, fail to achieve rated torque, or back out during operation — all of which can lead to fluid leaks, component misalignment, or structural failure in the pump assembly.
Part Details
| Part Number | 511428 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Allen Head Screw 1/2-13 x 3 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Mayco Pumps | LS300P |
| Mayco Pumps | LS600 |
| Mayco Pumps | LS600P |
| Mayco Pumps | LS60TD |
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.
