A.A Swivel Top Angle Bracket Bunk Board Mounts 8-Pack — Galvanized Steel Adjustable for Boat Pontoon Trailer

A.A 8-pack swivel top angle brackets are adjustable galvanized steel mounts that let you secure and angle bunk boards on boats, pontoons, and trailers for better hull support and alignment.

These brackets provide a versatile, corrosion-resistant solution for attaching bunk boards to existing bolster frames on trailers and marine craft. Built from heavy-duty galvanized steel with a protective zinc finish, the set of eight brackets is designed to withstand outdoor exposure while giving you the flexibility to tilt, swivel, and position bunk boards precisely where your hull needs support. Fasteners are not included, so choose bolts sized to your setup for a secure installation.

How do these brackets improve bunk board alignment?

The swivel top and angled flange let you fine-tune the bunk board angle to match hull contours and loading conditions. Instead of forcing the board to fit a fixed bracket, the adjustable top pivots to reduce pressure points and distribute weight more evenly.

• Swivel top accommodates slight changes in board angle and hull shape
• Adjustable angle reduces concentrated stress on boat hulls
• Eight brackets allow uniform support across the full bunk length

What are the main materials and corrosion protections?

Each bracket is formed from heavy-gauge steel and finished with a zinc coating for rust resistance in wet environments. The galvanized base metal and protective plating help the brackets hold up to saltwater splash and frequent exposure to outdoor conditions.

• Heavy-duty galvanized steel construction for strength
• Zinc coating resists rust and extends service life
• Suitable for freshwater and light marine saltwater use with proper maintenance

What hardware do I need to install them on my trailer?

The top flange accepts 3/8" bolts while the swivel pivot takes 1/2" bolts; choose marine-grade fasteners for best longevity. Mounting requires matching nuts, washers, and lock hardware compatible with your existing bolster brackets or frame holes.

• Top flange bolt size: 3/8" diameter (not included)
• Swivel pivot bolt size: 1/2" diameter (not included)
• Use stainless or galvanized bolts and lock washers to prevent loosening and corrosion

How will the 8-pack layout affect installation planning?

Buying the set of eight brackets lets you install a complete bunk-support array for a single boat or trailer side, or refresh multiple contact points for better load distribution. Spacing brackets evenly across the bunk length helps prevent sagging and keeps the hull centered during transport.

• Eight brackets cover most standard bunk setups per side
• Even spacing increases stability and reduces bunk wear
• Mix-and-match placement allows tailored support for different hull shapes

Who is this for: These brackets are for boat owners, trailer fabricators, and do-it-yourself marine enthusiasts who need a durable, adjustable method to mount bunk boards. If you manage pontoon or boat transport and want to fine-tune hull support while using existing bolster hardware, the A.A swivel top angle brackets offer a robust, corrosion-resistant option. Note: purchase appropriate bolts and hardware for your specific mounting situation.