Buyers Products UB623512 12 in Square Bend U-Bolt Kit - Durable Grade

In this review the Buyers Products UB623512 12 in Square Bend U-Bolt Kit is evaluated for contractors, fleet managers, and DIY truck owners who need a dependable way to mount truck boxes and connect bodies to chassis. The biggest reason to buy is straightforward: this kit pairs four 5/8 in square bend U-bolts with forged 1/2 in tie bars and Grade 5 equivalent hardware for a strong, no-frills installation that suits a variety of chassis configurations. Installers looking for durable, heavy-duty components will find the kit covers the basic fastening needs without extra parts or confusing options.

Key Features

• Complete hardware kit: The package includes four square bend U-bolts, eight hex nuts and split lock washers so installers can complete most mounts without hunting for additional fasteners.
• Forged tie bars: The 1/2 in thick forged steel tie bars provide superior strength and resist bending under load when securing truck boxes to frames.
• Grade 5 equivalent bolts: The 5/8 in U-bolts are built to Grade 5 equivalent standards for dependable clamping force in demanding use.
• Versatile lengths available: Multiple length options let you choose the U-bolt length that matches different truck chassis and frame sizes for a proper fit.
• Simple installation: The straightforward hardware set and common fastener sizes make the kit easy to install with basic shop tools and standard torque procedures.

Who It's For

The kit is aimed at commercial service shops, fleet maintenance teams, and owner-operators who need reliable, serviceable hardware to mount truck boxes and connect bodies to chassis. Its emphasis on forged tie bars and Grade 5 equivalent U-bolts makes it a good match for medium- and heavy-duty trucks where durability is required.

Those who should look elsewhere include buyers needing stainless or corrosion-resistant finishes for coastal or corrosive environments, or anyone requiring integrated mounting pads or custom brackets; this kit focuses on strength and fit, not specialized coatings or accessories.

Pros & Cons

Pros

• Well-sized Grade 5 equivalent hardware and forged tie bars deliver a solid, durable connection under load.
• Comes as a near-complete kit so most installs do not require extra parts or extra trips to the hardware store.
• Multiple length choices make it easy to match different chassis and frame thicknesses for a proper secure fit.

Cons

• Some buyers have reported mixed assembly quality with missing nuts or lock washers on rare occasions, so check contents before installation.

Specifications

Kit contents	Four 5/8 in square bend U-bolts, eight 5/8 in hex nuts, split lock washers, 1/2 in forged tie bars
U-bolt diameter	5/8 in
Tie bar thickness	1/2 in forged steel
Hardware grade	Grade 5 equivalent
Intended use	Mounting truck boxes and connecting truck bodies to chassis
Quantity	Four complete U-bolt assemblies per kit

Our Verdict

The Buyers Products UB623512 kit is a practical, value-oriented choice for anyone who needs strong, serviceable U-bolt assemblies for truck box mounting or body-to-chassis connections. Its forged tie bars and Grade 5 equivalent U-bolts make it a dependable option for most medium- and heavy-duty installations, though buyers should inspect the kit on delivery to confirm all nuts and washers are present.

Frequently Asked Questions

Are the tie bars forged or stamped?
The tie bars are forged 1/2 in thick steel for improved strength and durability.

Does the kit include nuts and washers?
Yes, the kit includes eight hex nuts and split lock washers to assemble the four U-bolts, but check contents at receipt since a small number of customers reported missing pieces.

Can I use these on different truck frames?
Yes, the kit is offered in various U-bolt lengths so you can choose the length that fits your truck chassis configuration.