Attwood Marine Lock'N-Pin Fixed Height Seat Post, 3/4 in Pin, 1.5 in Diameter

Overview

The Attwood Marine Lock'N-Pin 3/4" Pin Fixed Height Posts is a range of fixed-height boat seat posts for compatible Swivl-Eze Lock'N-Pin 3/4" seating systems. These posts are used when a boat seat needs a set height rather than an adjustable pedestal, making them practical for fishing seats, pontoon seating, cockpit layouts, and replacement work on existing Lock'N-Pin hardware.

The range centers on the 3/4" pin system and a 1.5" post diameter, with listed height, threading, and pin material options to match different bases and seat mounts. Lock'N-Pin hardware helps prevent unintentional separation between the seat mount, post, and base, and the system exceeds ABYC Standard H31.6.1 for boat seating hardware.

Key features

• Fixed-height 3/4" pin post format for boat seats where the sitting position does not need adjustment.
• 1.5" post diameter across the Lock'N-Pin fixed-height configurations validated for this range.
• Lock'N-Pin retention helps keep compatible seat mounts, posts, and bases from separating unintentionally.
• Threaded and non-threaded pin options support different Lock'N-Pin base and mount setups.
• Steel and stainless steel pin options make it easier to match the post to the boat's hardware layout and exposure level.
• Exceeds ABYC Standard H31.6.1 for marine seat mounting security.

Variants

This range varies by listed post height, threading style, and pin material. The available configurations cover fixed-height posts in several heights, with non-threaded and threaded 3/4" pin styles, plus steel or stainless steel pin choices depending on the variant.

The correct variant depends on the existing Lock'N-Pin base, the seat mount being used, and the height needed at that seating position. Threading should match the receiving hardware, and the pin material should be selected with the boat's exposure, maintenance routine, and hardware preference in mind.

Compatibility and fit

These posts are intended for compatible Attwood Swivl-Eze Lock'N-Pin 3/4" seat pedestal systems. The key fit points are the 3/4" pin style, the threaded or non-threaded connection, the 1.5" post diameter, and the finished seat height once the seat mount and base are installed.

For replacement use, the safest approach is to match the existing post height and pin style before changing materials or switching between threaded and non-threaded hardware. For a new seating position, confirm that the selected base, post, and seat mount are all from the same compatible 3/4" Lock'N-Pin system.

Use on board

A fixed-height post works well where the seat position is meant to stay consistent, such as a fishing station, a pontoon lounge position, a small helm seat, or an added cockpit seat. It is also a straightforward option when refreshing older 3/4" Lock'N-Pin seating hardware without moving to an adjustable pedestal.

This range is a good match for boat owners who already use Lock'N-Pin components and want to keep the same seat system across multiple seating locations. It also helps when matching different seat heights on board, while keeping the same general pedestal format.

Maintenance and care

After saltwater use, rinse the exposed post, pin, and receiving base with fresh water and let the parts dry before covering the boat or storing removable seating. Keeping the pin and locking contact points clean helps the post seat properly and makes removal easier at the end of the day.

Check the base, seat mount, and locking engagement during routine boat maintenance, especially on fishing boats and tenders where seats are removed often. Replace worn, bent, or mismatched components rather than mixing hardware that does not lock cleanly into the 3/4" Lock'N-Pin 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.