attwood Clamp-On Seat Swivel Mount for Boats, Mount Style — Black Powder-Coated Steel, 360° Rotation

Attwood's clamp-on swivel seat mount is an adjustable steel boat seat bracket that clamps to gunwales and offers 360° rotation with a 7.5"–18" height range for small-boat seating.

This compact, clamp-on seat mount from Attwood is engineered to fit most common marine seat hole patterns while giving a robust, low-profile attachment option for Jon boats and other small craft. Built from powder-coated steel, it resists corrosion and provides a secure platform when installed per instructions. The mount is designed for low-speed use (up to 5 MPH) and includes wing nuts for tightening; a separate tool is needed for final adjustment.

How does this seat mount secure to my boat and seat?

The clamp-on design attaches to the boat's gunwale or bracket with a threaded clamping mechanism that holds the mount firmly in place when tightened. The top plate accepts the most common seat hole patterns, so many aftermarket and OEM seats will bolt on directly.

• Clamp-on installation grips gunwales without permanent drilling when used on appropriate surfaces
• Top plate accommodates standard seat bolt patterns for broad compatibility
• Wing nuts provide tool-assisted locking for reliable holding power
• Follow included instructions for correct torque and safety

What adjustments and swivel features does it provide?

This mount telescopes from 7.5 inches up to 18 inches to let you fine-tune seat height for visibility and legroom. The swivel pivot delivers 360-degree rotation so you can turn easily while seated for fishing, docking, or boarding tasks.

• Height adjusts across a wide range to suit different user heights and boat setups
• 360° swivel allows full rotation for convenience while seated
• Secure locking hardware ensures the chosen height and swivel tension stay in place
• Recommended for use at low boat speeds to maintain safe operation

Is this mounting system durable enough for marine conditions?

The mount is constructed from steel with a black powder-coated finish that improves resistance to rust and abrasions encountered in marine environments. Proper installation, routine inspection, and touch-up paint where coatings wear will extend service life.

• Steel core offers strength for repetitive load and motion
• Powder-coated surface minimizes corrosion and scuffing
• Designed and tested to meet ABYC Code B standards for marine hardware
• Periodic maintenance recommended to preserve finish and fastener condition

Can I use this seat mount across different small boats and seat types?

Yes — the universal top plate and adjustable column make it suitable for many small-boat layouts, especially Jon boats, skiffs, and small runabouts. Check seat bolt patterns and clamp thickness limits before purchase to ensure fitment.

• Works with most common seat hole patterns for quick compatibility checks
• Clamp design adapts to a variety of gunwale and bench edge profiles
• Recommended for low-speed applications and small-boat use cases
• Verify clamp opening and seat bolt spacing prior to installation

Who is this for: This Attwood clamp-on swivel seat mount is aimed at anglers, small-boat owners, and weekend boaters who want a versatile, adjustable seating solution without committing to permanent hardware changes. It suits anyone looking for a durable, corrosion-resistant mount that fits common seat patterns and offers full swivel movement for easier access and better onboard ergonomics on Jon boats and similar craft.