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Attwood Lock’n-Pin SP-64839 3/4-Inch Boat Seat Post Base

$27.29 (Price correct as of 10/29/2026 18:08 PDT · Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

The Attwood Lock’n-Pin SP-64839 boat seat post base is designed for 3/4-inch non-threaded pedestal pins. Its 4-inch x 8-inch plate has a six-bolt mounting pattern, and mounting hardware is not included. Check the pin type, plate footprint, bolt pattern, and hardware needs for your installation.

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SKU: B002FVKJWQ Category:

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Quick Summary

The Attwood Lock’n-Pin SP-64839 is a boat seat post base for 3/4-inch non-threaded pedestal pins. It has a 4-inch x 8-inch plate, an acetal bushing, and a six-bolt mounting pattern.

Key Details

Detail Product information and buyer relevance
Pedestal pin Designed for 3/4-inch non-threaded pins. Confirm the pin type and diameter match.
Base dimensions The plate measures 4 inches x 8 inches. Check the footprint against the intended mounting location.
Construction The top plate is stainless steel-plated and has a reinforcing steel lip tube. An integrated acetal bushing engages with the pedestal pin.
Finish A clear-coat finish offers added resistance to corrosion in marine environments.
Mounting pattern Uses six bolts or screws; mounting hardware is not included.

Compatibility, Size and Fit

This base is specified for a 3/4-inch non-threaded pedestal pin. Check both the pin type and diameter, then compare the 4-inch x 8-inch plate and six-bolt pattern with the mounting location. The product description does not specify hardware dimensions, so confirm the appropriate bolts or screws for the installation.

What Is Included

Mounting hardware is not included. Do not assume bolts or screws are supplied with the base.

Before You Decide

Confirm that the pedestal uses a 3/4-inch non-threaded pin, that the plate and bolt pattern fit the mounting location, and that you have suitable mounting hardware.

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