The Multiquip 511330 Left-Hand Nut is a genuine OEM component designed for FS1 series concrete saws. As a direct factory replacement, this nut is manufactured to the exact thread specification required for proper blade retention on FS1 equipment. Sourcing the correct OEM part ensures the fastener engages the spindle thread as intended — critical on rotating assemblies where left-hand threading is specified by design. Verify your model against the FS1 fitment before ordering to confirm compatibility.
Key Features
- Left-Hand Thread Specification: — Manufactured with the correct counter-clockwise thread direction required by the FS1 saw spindle assembly — a standard right-hand nut will not work here.
- Genuine OEM Construction: — Produced to Multiquip's original material and dimensional standards, ensuring consistent thread engagement and clamping force on the blade flange.
- Direct Spindle Replacement: — Installs directly onto the FS1 blade arbor with no modification, restoring the fastener to its original configuration.
- FS1 Concrete Saw Fitment: — Confirmed fitment for Multiquip FS1 series concrete saws; always cross-reference part number 511330 with your equipment's parts manual.
- Blade Security Under Load: — A correctly torqued left-hand nut keeps the cutting blade securely seated during operation; a worn or incorrect nut risks blade slippage and loss of cutting control.
- Operator Safety Compliance: — Blade retention hardware on concrete saws is a safety-critical fastener — using the specified OEM nut helps maintain the integrity of the blade mounting system.
A left-hand nut is used on rotating spindle assemblies where the natural direction of blade rotation would otherwise loosen a conventional right-hand fastener over time. On concrete saws like the FS1, the blade arbor spins in a direction that causes a standard nut to back off under load, so a left-hand threaded nut is engineered into the design to self-tighten during cutting. When this nut becomes damaged, stripped, or lost, replacing it with the correct left-hand specification part — part number 511330 — is essential to keeping the blade properly secured and the saw operating safely.
Part Details
| Part Number | 511330 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Left-Hand Nut |
Compatibility & Fitment
| Name | Model |
|---|---|
| Concrete Saws | FS1 |
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.
