Attwood Marine SWIVL-EZE Lock'N-Pin Threaded Deck Base, 3/4 in Pin, 7 x 7 in, Zinc-Plated Steel
Got questions? Ask an expert!
Know someone who needs this?
Share it with your crew or mechanic.
Overview
The Attwood Marine SP-67739-T is a 7" x 7" zinc-plated steel pedestal base plate for SWIVL-EZE Lock'N-Pin 3/4" threaded seat pedestals. It mounts flush to the deck and gives you a fixed base for a seat setup that needs a threaded 3/4" Lock'N-Pin connection rather than a simple drop-in post.
This is the kind of base used when you are replacing a worn deck plate or adding another seating position on a pontoon, fishing boat, or cruising boat. The square 7" x 7" footprint spreads load across the mounting area, and the six-hole deck attachment pattern gives you a straightforward way to bolt or screw it down to a properly reinforced surface.
Key features
- Fits SWIVL-EZE Lock'N-Pin 3/4" threaded pedestal systems
- 7" x 7" square base plate for a broad deck footprint
- Zinc-plated steel construction
- Flush-mount deck plate with six attachment points
- Threaded base connection adds a more secure seat-to-base engagement
Compatibility and fit
This base is for seat systems built around the Attwood SWIVL-EZE Lock'N-Pin 3/4" threaded standard. Before ordering, match the pedestal style and thread type in your current setup, not just the outside post size. That matters most on replacement jobs where the seat, pedestal, and deck plate may have come from different generations or brands.
The 7" x 7" footprint works well where you have enough flat deck area to support the plate and the fasteners below it. On smaller casting decks, storage lids, or thin fiberglass sections, check clearance underneath and make sure the mounting surface can take the load of the seat and passenger in rough water.
Installation and setup
Installation is straightforward once the mounting position is set. The plate fastens through six holes, so it is worth taking time to line it up with the seat position, helm access, and under-deck structure before drilling. A solid backing surface is important on boats that see chop, repeated seat movement, or heavier occupants.
For refits, this base makes sense when the rest of the seating hardware is still built around the 3/4" Lock'N-Pin threaded format and you want to keep the system consistent. It is also a practical choice when adding a second seat location for fishing, cruising, or extra passenger seating without changing the rest of the pedestal hardware.
Use on board
This base suits owners who need a simple deck plate for a compatible pedestal seat on pontoons, center consoles, and small cruising boats. It is especially useful where the priority is a known 3/4" Lock'N-Pin fit and a deck plate that can be mounted cleanly without moving to a different seat system.
Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.
Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.
Delivery and tracking
Deliveries are handled by trusted carriers such as USPS, UPS, FedEx, and DHL. Estimated arrival times appear at checkout and depend on your location and the service you choose. These are estimates and can be affected by customs or carrier disruptions. A shipping confirmation with a tracking link is emailed when your order ships, and tracking may take up to 24 hours to update. You can also view tracking in your account.
Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.
Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.
Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.
To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.
We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.