EZ Loader 5/8"-11 x 6-1/2" Zinc-Plated Hex Bolt | 290-027394
EZ Loader 5/8"-11 x 6-1/2" Zinc-Plated Hex Bolt | 290-027394 is backordered and will ship as soon as it is back in stock.
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EZ Loader 5/8"-11 x 6-1/2" Zinc-Plated Hex Bolt | 290-027394
EZ Loader 5/8"-11 x 6-1/2" Zinc-Plated Hex Bolt | 290-027394 is backordered and will ship as soon as it is back in stock.
Description
Description
EZ Loader 5/8"-11 x 6-1/2" Hex Head Bolt — Heavy-Duty Structural Hardware
This OEM EZ Loader hex head bolt is designed for trailer applications requiring higher load capacity, increased clamping force, and reliable structural fitment. The 5/8" diameter provides greater strength than standard hardware, making it suitable for critical connection points.
At 6-1/2" in length, this bolt is commonly used in multi-layer mounting applications where bracket spacing and frame thickness require extended reach and proper thread engagement.
| Part Number: | 290-027394 |
| Component Type: | Hex Head Bolt |
| Diameter / Thread: | 5/8"-11 UNC (Coarse Thread) |
| Length: | 6-1/2" |
| Grade: | Grade 5 |
| Material / Finish: | Zinc-Plated Steel |
| Common Use: | Heavy-duty frame connections, large bracket assemblies, bunk and roller system mounting, and structural trailer components |
| Function: | Provides high clamping force and load distribution across multiple components while maintaining alignment under vibration |
| 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. It is not interchangeable with smaller diameters. Always verify size, length, and application before ordering. |
Designed for Heavy-Duty Trailer Applications
This bolt is used in areas where increased strength and load capacity are required, particularly in larger EZ Loader trailer configurations.
- Frame and crossmember connections
- Large bunk and roller assemblies
- Structural mounting points under load
Built for applications where smaller diameter hardware is not sufficient.
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 under load
- Supports proper alignment of major 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, bolts in this size range are used in high-stress structural areas. Using the correct diameter and length ensures proper fitment and long-term reliability.
Need help confirming fitment? View EZ Loader Boat Trailer Fitment Guides to see how hardware is used across real trailer configurations.
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