attwood Swivl-Eze Lock'N-Pin 7 Inch Stainless Steel Non Threaded Boat Seat Pedestal Base Review
A satin stainless 7 inch base for 3/4 inch pin socket boat seats, engineered to exceed ABYC standards
| Base size | 7 inches square |
|---|---|
| Material | Stainless steel, satin finish |
| Pin socket | 3/4 inch, non threaded |
| Mounting hole | 2 3/4 inch diameter |
| Fasteners | Pre-drilled for 6 screws or bolts, not included |
| Rating | Type B |
| Best for | Small boat owners adding or replacing a pedestal base for a swivel seat on slow, calm-water use |
Product Overview
The attwood Swivl-Eze Lock'N-Pin is a stainless steel seat pedestal base for boats. It is the fixed part that bolts to the deck, and a seat with a matching pin socket mounts on top so that it can swivel and lock in position.
This is the non threaded model. The listing says it is designed to accommodate a 3/4 inch pin socket, so the seat or post that fits it must use that pin size rather than a threaded connection.
The base is 7 inches square with a satin stainless finish, countersunk mounting holes, a steel lip tube and a nylon bushing. The nylon bushing is the part that lets the seat turn smoothly, and the lip tube holds it in place.
The maker says the base is engineered to exceed American Boat and Yacht Council standards. It carries a Type B rating, which limits how it should be used, and that limit matters more than any other detail in the listing.
Score Breakdown
This verdict is based on the manufacturer's stated specifications, the current Amazon listing and its product images, the confirmed materials and design, real buyer ratings, and our research into the product category. Scores are consistent editorial judgments, not laboratory measurements, and we did not receive a paid sample.
Key Features
A satin finish stainless body for marine use.
Screws sit flush with the surface.
Holds the pin socket and nylon bushing in place.
Allows the seat to swivel smoothly.
Six holes for screws or bolts, hardware sold separately.
Engineered to exceed American Boat and Yacht Council standards.
Design and Build Quality
The base is 7 inches square and weighs 2.8 pounds, which is substantial for a mounting part. The listing describes a stainless steel body with a satin finish, which is a sensible material for a part that sits in a wet marine environment.
Countersunk mounting holes allow screws or bolts to sit flush with the surface, avoiding snagging on clothing or bare feet. The base is pre-drilled for six screws or bolts, but the hardware is not included, so you need to buy fasteners that suit your deck material.
The pedestal requires a 2 3/4 inch diameter mounting hole, which is an important measurement to check before cutting any deck. A steel lip tube and nylon bushing complete the swivel assembly.
The design is non threaded and fits a 3/4 inch pin socket, so it will not work with a threaded seat post and only suits matching pin socket seats.
Performance in Everyday Use
Function is straightforward. The base fixes to the deck and the pin socket drops into the lip tube, where the nylon bushing allows the seat to swivel. The Lock'N-Pin design allows the seat to be locked in position when needed.
The listing makes clear that the Type B rating restricts use. It is not for helm or driver seats, and not for speeds in excess of 5 mph. That makes it suited to calm-water fishing boats, small tenders and slow leisure craft rather than anything with real speed.
The maker says the base is engineered to exceed American Boat and Yacht Council standards, which is a reassuring statement but does not remove the Type B limits.
Installation is a basic job for anyone comfortable with drilling a clean 2 3/4 inch hole and fixing six fasteners. Because hardware is excluded, choose corrosion-resistant fasteners and appropriate backing for the deck.
The product carries a One Year Warranty according to the listing.
How It Performs: The Evidence
| Decision factor | What we found | Evidence and measurement | Score | Why it matters |
|---|---|---|---|---|
| Material | Satin stainless steel | Material in the listing | 8.8 | Suits a wet marine setting |
| Mounting | Pre-drilled for 6 fasteners | Holes described in the listing | 8.2 | Straightforward fixing |
| Hole size | 2 3/4 inch | Required hole in the listing | 8.0 | Needs a precise cutout |
| Swivel | Nylon bushing | Bushing described in the listing | 8.6 | Smooth turning |
| Rating | Type B | Rating in the listing | 6.8 | Not for helm seats or fast boats |
| Speed limit | Under 5 mph use | Limit in the listing | 6.8 | Slow craft only |
| Hardware | Not included | Stated in the listing | 6.8 | Buy fasteners separately |
Who Should Buy It
- Small fishing boats
- Calm-water leisure boats
- Replacing a worn seat base
- Tenders and dinghies
- Boat owners with pin socket seats
- Slow speed use
- Helm or driver seats, or boats that run faster than 5 mph
- Type B rating, not for helm or driver seats
- Not for speeds above 5 mph
- Mounting hardware is not included
- Needs an exact 2 3/4 inch mounting hole
- Non threaded design only fits pin socket seats
Full Specifications
How It Compares
| Feature | attwood | Typical option | Higher-tier option |
|---|---|---|---|
| Material | Stainless steel | Plastic | Aluminum |
| Mounting | Countersunk holes | Surface screws | Countersunk holes |
| Connection | Non threaded pin | Threaded post | Threaded post |
| Rating | Type B | Heavier duty | Type A |
| Swivel | Nylon bushing | Plain metal | Bushed |
| Hardware | Not included | Sometimes included | Sometimes included |
Alternatives Worth a Look
The attwood Swivl-Eze 7 inch base is a straightforward stainless pedestal for slow, calm-water boats with 3/4 inch pin socket seats. The satin stainless build, countersunk holes and pre-drilled mounting are practical strengths. Respect its Type B rating, buy suitable fasteners separately and never use it for a helm seat.
Frequently Asked Questions
What pin socket does it fit?
It is a non threaded base designed for a 3/4 inch pin socket.
What size hole does it need?
It needs a 2 3/4 inch diameter mounting hole.
Can I use it as a helm seat?
No. The listing says it is not for helm or driver seats.
What speeds is it rated for?
The Type B rating is not for speeds in excess of 5 mph.
Is mounting hardware included?
No. It is pre-drilled for six screws or bolts, but hardware is not included.
What is it made of?
Stainless steel with a satin finish, a steel lip tube and a nylon bushing.
What warranty does it have?
The listing states a One Year Warranty.
This review is based on the product listing, the manufacturer's stated specifications and our own category research on boat seat pedestals. It is not based on independent hands-on testing. Scores are editorial judgments built from the figures the listing provides, such as base size, mounting hole and ratings, and they should be read as a comparison against typical alternatives rather than as measured results.