The Multiquip EM16521 is a genuine OEM HHC Screw 1/2-13 x 4 Grade 8 designed for use across multiple Multiquip equipment families including LT6K light towers, SP4 and SP6 series pavement saws, and the WRS5200 ride-on roller screed. This is a direct OEM replacement fastener sourced to Multiquip's exact specification, ensuring proper torque retention and structural integrity in the original mounting application. Confirm your model against the fitment list — EM16521 is verified for LT6K, LT6K60HZ, LT6K550HZ, LT6KV, SP605716, SP605720, SP605726, SP605730, SP605736, SP4, SP6457, and WRS5200.
Key Features
- Grade 8 Tensile Strength — Heat-treated Grade 8 carbon steel delivers the high clamping force and shear resistance these heavy-duty equipment assemblies demand.
- Hex Head Cap (HHC) Configuration — Standard hex head cap profile installs with common hand and impact tools, seating correctly against mating hardware in the original fastener position.
- Genuine OEM Sourcing — Supplied by Multiquip to the same material and dimensional standard as the fastener installed at the factory, so thread engagement and bearing surface match the original design.
- Broad Cross-Family Fitment — A single part number covers light towers (LT6K series), pavement and flat saws (SP4, SP6 series), and ride-on roller screeds (WRS5200), making it a practical stock item for mixed Multiquip fleets.
- Critical Structural Fastener — Fasteners in this size and grade class typically secure frames, canopies, blade guards, or drive assemblies; using the correct grade prevents joint loosening, fatigue cracking, and potential field failure under vibration loads.
A hex head cap screw in the 1/2-13 x 4 Grade 8 class is a structural fastener used where high clamping load and resistance to vibration-induced loosening are essential. Grade 8 hardware is heat-treated to a minimum tensile strength significantly above standard hardware-grade bolts, making it the correct specification for load-bearing joints on equipment that generates continuous vibration — such as pavement saws, light tower masts, and roller screeds. Using an incorrect grade or a worn fastener in these positions risks joint movement, elongation of the bolt shank, and eventual structural failure, so matching the OEM part number exactly is important for long-term assembly integrity.
Part Details
| Part Number | 16521 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | HHC Screw 1/2-13 x 4 Grade 8 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Light Towers | LT6K60HZ |
| MQ Towable Light Towers | LT6K550HZ |
| Towable Towers | LT6KV (60HZ) |
| MQ Pavement Saws | SP605720 |
| MQ Pavement Saws | SP605730 |
| Ride-On Roller Screeds | WRS5200 |
| Towable Towers | LT6K |
| MQ Pavement Saws | SP605716 |
| MQ Pavement Saws | SP605726 |
| MQ Pavement Saws | SP605736 |
| MQ Pavement Saws | SP4 |
| MQ Pavement Saws | SP6457 |
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.
