EZ Loader 9/16"-12 x 3-1/2" Zinc-Plated Hex Bolt | 290-001616
EZ Loader 9/16"-12 x 3-1/2" Zinc-Plated Hex Bolt | 290-001616 is backordered and will ship as soon as it is back in stock.
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EZ Loader 9/16"-12 x 3-1/2" Zinc-Plated Hex Bolt | 290-00...
EZ Loader 9/16"-12 x 3-1/2" Zinc-Plated Hex Bolt | 290-001616 is backordered and will ship as soon as it is back in stock.
Description
Description
EZ Loader 9/16"-12 x 3-1/2" Hex Head Bolt — Structural Trailer Hardware
This OEM EZ Loader hex head bolt is designed for trailer applications requiring increased strength, proper clamping force, and reliable fitment. The larger 9/16" diameter provides greater load capacity compared to standard 1/2" hardware, making it suitable for heavier-duty mounting points.
| Part Number: | 290-001616 |
| Component Type: | Hex Head Bolt |
| Diameter / Thread: | 9/16"-12 UNC (Coarse Thread) |
| Length: | 3-1/2" |
| Grade: | Grade 5 |
| Material / Finish: | Zinc-Plated Steel |
| Common Use: | Suspension mounting, frame brackets, heavy-duty support brackets, and structural trailer connections |
| Function: | Provides increased clamping force and load support in higher-stress trailer applications |
| Recommended Hardware: | Typically used with 9/16"-12 locknuts and hardened washers for secure, vibration-resistant fastening |
| Included: | Bolt only (nuts and washers sold separately unless noted) |
| Important Note: | This bolt requires matching 9/16" hardware and mounting holes. It is not interchangeable with 1/2" bolts. Always verify size, length, and application before ordering. |
Designed for Higher-Load Trailer Applications
This bolt is used in areas exposed to vibration, dynamic loads, and outdoor conditions where secure fastening is critical.
- Leaf spring and suspension mounting points
- Frame and hanger brackets
- Heavy-duty support and guide assemblies
Built for applications where standard 1/2" hardware is not sufficient.
Grade 5 Strength
- Medium carbon steel construction
- Designed for structural trailer applications
- Balances strength and flexibility under load
Suitable for high-load, vibration-prone environments.
Zinc-Plated Finish
- Sacrificial corrosion protection
- Helps protect base metal and surrounding components
- Consistent with OEM trailer hardware systems
Zinc is designed to wear first, helping protect the trailer over time.
Why This Part Matters
- Maintains structural integrity under load
- Supports proper alignment of trailer components
- Reduces loosening in vibration-prone areas
Hardware is part of the trailer system—not interchangeable by appearance alone.
Real-World Insight
At EZLoaderParts411.com, larger diameter bolts like this are commonly used in suspension and structural mounting points. Using the correct size and grade ensures proper fitment and long-term reliability.
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