EZ Loader 5/8"-11 x 8" Zinc-Plated Hex Bolt | 290-001697
EZ Loader 5/8"-11 x 8" Zinc-Plated Hex Bolt | 290-001697 is backordered and will ship as soon as it is back in stock.
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EZ Loader 5/8"-11 x 8" Zinc-Plated Hex Bolt | 290-001697 is backordered and will ship as soon as it is back in stock.
Description
Description
EZ Loader 5/8"-11 x 8" Hex Head Bolt — Heavy-Duty Extended-Length Hardware
This OEM EZ Loader hex head bolt is designed for trailer applications requiring maximum clamping force, extended reach, and reliable structural fitment. The 5/8" diameter provides increased load capacity for high-stress connection points.
At 8" in length, this bolt is used in multi-layer assemblies and longer mounting spans where shorter bolts cannot provide proper thread engagement or structural support.
| Part Number: | 290-001697 |
| Component Type: | Hex Head Bolt |
| Diameter / Thread: | 5/8"-11 UNC (Coarse Thread) |
| Length: | 8" |
| Grade: | Grade 5 |
| Material / Finish: | Zinc-Plated Steel |
| Common Use: | Heavy-duty frame connections, extended bracket assemblies, bunk and roller system mounting, and multi-layer structural components |
| Function: | Provides high clamping force across long mounting spans while maintaining alignment and load distribution |
| Recommended Hardware: | Typically used with 5/8"-11 locknuts and hardened washers for proper load handling and vibration resistance |
| Included: | Bolt only (nuts and washers sold separately unless noted) |
| Important Note: | This bolt requires matching 5/8" hardware and mounting holes. Length and grade are critical. Incorrect sizing can lead to misalignment or reduced clamping strength. |
Designed for Extended-Length Structural Mounting
This bolt is used in applications where longer reach is required to secure multiple components across wider spacing or deeper mounting configurations.
- Frame and crossmember connections
- Extended bunk and roller assemblies
- Multi-layer bracket mounting
Built for applications where shorter bolts cannot provide proper thread engagement.
Grade 5 Strength
- Medium carbon steel construction
- Designed for structural trailer use
- Balances strength and flexibility under dynamic loads
Suitable for high-load environments with vibration and repeated stress.
Zinc-Plated Finish
- Sacrificial corrosion protection
- Helps protect base metal and surrounding trailer components
- Consistent with OEM EZ Loader hardware systems
Zinc is designed to wear first, helping protect the trailer over time.
Why This Part Matters
- Maintains structural integrity across long mounting spans
- Supports proper alignment of major components
- Prevents loosening in vibration-prone areas
Hardware is part of the trailer system—not interchangeable by appearance alone.
Real-World Insight
At EZLoaderParts411.com, extended-length bolts like this are used where trailer geometry requires additional reach. Using the correct length ensures proper thread engagement and prevents movement or misalignment over time.
Need help confirming fitment? View EZ Loader Trailer Fitment Guides to see how hardware is used across real trailer configurations.
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