Yantuo Boat Trailer Swivel Top Angle Brackets 8-Pack — Galvanized 3mm Heavy-Duty Bunk Mounts

Yantuo 8 PCS Boat Trailer Top Angle Swivel Top Angle Bracket set is a heavy-duty, 3mm-thick galvanized mounting solution for securing double-deck bunks to boats and trailers. These swivel top angle brackets are engineered to fasten and articulate bunk boards while resisting corrosion and deformation. Built from thicker metal than many aftermarket options and finished with a protective galvanized coating, the brackets reduce unwanted rotation and give a stable connection point for trailer bunk systems. Each kit contains eight brackets sized for common bunk assemblies — verify hole diameters and spacing against your trailer before purchase to ensure compatibility.

How do these brackets improve bunk stability on my trailer?

The brackets use a concave design at the swivel joint to limit unwanted rotation, creating a firmer anchor for bunk boards under load. Their heavier 3mm construction and galvanized finish also resist bending and surface deterioration so the connection stays secure over time.

• Concave swivel seat reduces lateral play during transport
• 3mm thick metal provides increased rigidity versus thinner brackets
• Galvanized surface protects against rust and marine exposure

What are the exact mounting sizes and bolt requirements?

Top flange mounting holes accept 3/8" diameter bolts while the swivel pivot takes a 1/2" bolt. The bracket measures approximately 3.5 x 1.35 x 2 inches, with the top mount holes 2" center-to-center — measure your bunk and trailer mounting points to confirm fit before installing.

• Top flange hole diameter: 3/8"
• Swivel pivot hole diameter: 1/2"
• Bracket footprint: ~3.5 x 1.35 x 2 inches; top holes spaced 2" C-C

Will these brackets withstand marine conditions and heavy use?

The brackets are galvanized to slow corrosion in wet environments and are formed from heavier metal to resist bending under load. While they are corrosion-resistant, periodic inspection and maintenance are recommended to ensure long-term performance in saltwater conditions.

• Galvanized finish for improved rust resistance
• 3mm thickness increases bending resistance by about 20% over thinner options
• Designed for repeated loading typical of trailer transport

What’s included and what hardware do I still need?

The package contains eight Yantuo swivel top angle brackets intended for multi-bunk setups. Mounting bolts, nuts, washers and any specialty fasteners are not included, so plan to supply 3/8" and 1/2" bolts with compatible length and marine-grade materials if used in corrosive environments.

• Included: 8 swivel top angle brackets
• Not included: bolts, nuts, washers, and other fastening hardware
• Recommended: stainless or hot-dip galvanized fasteners for marine use

Who is this for These brackets are aimed at boat owners, trailer repair shops, and DIYers who need a stronger, corrosion-resistant mounting solution for double-deck bunk systems. Choose Yantuo brackets if you want thicker metal, a swivel design that reduces rotation, and galvanization for better durability in wet or coastal environments. Measure your trailer’s hole spacing and bolt diameters before ordering to make sure these brackets match your setup and to avoid returns.

FAQ

Q: Do these brackets include mounting bolts?

A: No, the set includes eight brackets only; you must supply 3/8" and 1/2" bolts and associated hardware.

Q: Are these brackets suitable for saltwater trailers?

A: They are galvanized for improved corrosion resistance, but stainless fasteners and regular inspections are recommended in saltwater.