The Multiquip 505990 Socket Head Bolt is a genuine OEM fastener designed for a range of Multiquip concrete pumps, asphalt rollers, and power buggies. This bolt is a direct OEM replacement sourced to the same specifications as the original hardware, ensuring correct torque retention and structural integrity across all compatible assemblies. Confirmed fitment includes the LS300GK, LS300G, LS300P, LS600P, AR13H, AR13D, AR13HA/HAR, AR13HC, WTB-16, and WTB-16PD. Keeping the correct fastener in place is critical to maintaining proper clamping force and preventing component movement under load.
Key Features
- Genuine OEM Hardware Grade — Manufactured to Multiquip's original tensile and dimensional specifications, ensuring the bolt delivers the clamping force the assembly was engineered around.
- Hex Socket Drive — Internal hex socket head allows precise torque application with an Allen/hex key, including in tight clearance locations common on pump and roller frames.
- Broad Cross-Equipment Fitment — Compatible with LS300GK, LS300G, LS300P, LS600P concrete pumps, AR13H, AR13D, AR13HA/HAR, AR13HC asphalt rollers, and WTB-16, WTB-16PD power buggies.
- Structural Integrity Under Load — A correctly specified bolt maintains critical joint tension on high-vibration equipment such as concrete pumps and compaction rollers, where fastener failure can lead to component loosening or damage.
- Exact Part Number Match — Ordering by Multiquip part number 505990 confirms you receive the correct thread pitch, shank length, and head size for a drop-in replacement.
A socket head bolt is a high-strength threaded fastener used to secure structural and mechanical components within equipment assemblies. The internal hex socket design allows a hex key or Allen wrench to apply controlled torque in confined spaces where a standard bolt head would not fit. On high-vibration equipment like concrete pumps and asphalt rollers, fasteners are under constant stress; using the correct grade and size bolt is essential to maintaining joint clamping force. A missing, incorrect, or worn bolt can cause components to shift, leading to accelerated wear, misalignment, or mechanical failure during operation.
Part Details
| Part Number | 505990 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Socket Head Bolt |
Compatibility & Fitment
| Name | Model |
|---|---|
| Mayco Pumps | LS300GK |
| Rollers | AR13H |
| Rollers | AR13D |
| Rollers | AR13HA/HAR |
| Mayco Pumps | LS600P |
| Mayco Pumps | LS300G |
| Mayco Pumps | LS300P |
| Power Buggies | WTB-16PD |
| Power Buggies | WTB-16 |
| Rollers | AR13HC |
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.
