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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